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rogerwang2008 committed 2026-09-25 20:20:01 +08:00
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commit ed054247d5
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@@ -757,13 +1185,14 @@
<MESSAGE value="CMakeLists.txt" /> <MESSAGE value="CMakeLists.txt" />
<MESSAGE value="1" /> <MESSAGE value="1" />
<MESSAGE value="Update CMakeLists.txt" /> <MESSAGE value="Update CMakeLists.txt" />
<option name="LAST_COMMIT_MESSAGE" value="Update CMakeLists.txt" /> <MESSAGE value="some programs" />
<option name="LAST_COMMIT_MESSAGE" value="some programs" />
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<breakpoint-manager> <breakpoint-manager>
<breakpoints> <breakpoints>
<line-breakpoint enabled="true" suspend="THREAD" type="python-line"> <line-breakpoint enabled="true" suspend="THREAD" type="python-line">
<url>file://$PROJECT_DIR$/noi2001_food_chain_dsu.py</url> <url>file://$PROJECT_DIR$/NOI2001_food_chain_dsu.py</url>
<line>75</line> <line>75</line>
<option name="timeStamp" value="6" /> <option name="timeStamp" value="6" />
</line-breakpoint> </line-breakpoint>
@@ -787,11 +1216,21 @@
<line>66</line> <line>66</line>
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<line-breakpoint enabled="true" type="com.jetbrains.cidr.execution.debugger.OCBreakpointType">
<url>file://$PROJECT_DIR$/dsa/linear_list/dsa_0202_card_stacking.cpp</url>
<line>40</line>
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<option name="timeStamp" value="44" />
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<configuration name="CMakeRunConfiguration"> <configuration name="CMakeRunConfiguration">
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CMakeLists.txt
+7 -3
View File
@@ -1,9 +1,13 @@
cmake_minimum_required(VERSION 3.10) cmake_minimum_required(VERSION 3.10)
project(exercises) project(exercises C CXX)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
file(GLOB_RECURSE SOURCES "*.cpp") file(GLOB_RECURSE SOURCES "*.cpp" "*.c")
foreach (source ${SOURCES}) foreach (source ${SOURCES})
# 获取源文件所在目录（绝对路径） # 获取源文件所在目录（绝对路径）
@@ -22,7 +26,7 @@ foreach (source ${SOURCES})
endif () endif ()
add_executable(${target_name} ${source}) add_executable(${target_name} ${source})
# 顺便把可执行文件输出到与源文件对应的目录中（可选） # 把可执行文件输出到与源文件对应的目录中
set_target_properties(${target_name} PROPERTIES set_target_properties(${target_name} PROPERTIES
RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/${rel_dir}" RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/${rel_dir}"
) )
noi2001_food_chain_dsu.py → NOI2001_food_chain_dsu.py
View File
File renamed without changes.
_others/jzh/jzh_c1_h.c
+28
View File
@@ -0,0 +1,28 @@
#include <stdio.h>
#define MAX_N 1001
int n, s, max_s;
int d[MAX_N];
int sums[MAX_N];
int main() {
scanf("%d%d", &n, &s);
for (int i = 1; i <= n; i++) {
scanf("%d", &d[i]);
}
sums[0] = s;
for (int i = 1; i <= n; i++) {
sums[i] = sums[i - 1] + d[i];
}
for (int i = 0; i <= n; i++) {
if (max_s < sums[i])
max_s = sums[i];
}
printf("%d\n", max_s);
return 0;
}
cs101/dh_20260909_05_sum_fractions.cpp
+76
View File
@@ -0,0 +1,76 @@
#include <iostream>
#include <sstream>
using namespace std;
long long gcd(long long x, long long y) {
if (x < y) swap(x, y);
if (x % y == 0) { return y; }
return gcd(y, x % y);
}
class Fraction {
public:
long long numerator = 0, denominator = 1;
void simplify() {
if (numerator == 0) { denominator = 1; }
long long g = gcd(numerator, denominator);
numerator /= g, denominator /= g;
}
Fraction operator+(const Fraction& other) const {
Fraction result{
numerator * other.denominator + denominator * other.numerator,
denominator * other.denominator
};
result.simplify();
return result;
}
Fraction operator+=(const Fraction& other) {
return *this = *this + other;
}
Fraction() = default;
Fraction(const long long n, const long long d) : numerator(n), denominator(d) { simplify(); }
Fraction(const string& s) {
stringstream ss(s);
long long n, d;
char slash;
if (ss >> n >> slash >> d && slash == '/') {
numerator = n, denominator = d;
simplify();
} else {
throw invalid_argument("String is not a fraction");
}
}
[[nodiscard]] string to_string() const {
if (denominator == 1) {
return std::to_string(numerator);
}
return std::to_string(numerator) + '/' + std::to_string(denominator);
}
};
int n;
string s;
Fraction ans;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n;
for (int _ = 0; _ < n; _++) {
// clog << ans.numerator << '/' << ans.denominator << endl;
cin >> s;
ans += Fraction(s);
}
cout << ans.to_string() << endl;
return 0;
}
cs101/dh_20260909_10_smaller_numbers.cpp
+50
View File
@@ -0,0 +1,50 @@
#include <algorithm>
#include <iostream>
using namespace std;
struct Number {
int value;
int index;
bool operator<(const Number& other) const {
return value < other.value;
}
};
constexpr int MAX_N = 1001;
int n;
Number numbers[MAX_N];
int answers[MAX_N];
void get_answers() {
sort(numbers, numbers + n);
int real_idx = 0;
for (int i = 0; i < n; i++) {
if (i == 0 || numbers[i].value != numbers[i - 1].value) { real_idx = i; }
answers[numbers[i].index] = real_idx;
}
}
void print_answers() {
for (int i = 0; i < n; i++) {
cout << answers[i] << endl;
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n;
for (int i = 0; i < n; i++) {
cin >> numbers[i].value;
numbers[i].index = i;
}
get_answers();
print_answers();
return 0;
}
cs101/dh_20260909_11_count_digits_init.py
+17
View File
@@ -0,0 +1,17 @@
def get_count_digits_init(n: int, d: int) -> int:
return str(n).count(str(d))
MAX_N = 10001
count_digits_init = [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0] for _ in range(MAX_N)]
if __name__ == '__main__':
for i in range(1, MAX_N):
for d in range(10):
count_digits_init[i][d] = get_count_digits_init(i, d) + count_digits_init[i - 1][d]
# with open('dh_20260909_11_count_digits_init.out', 'w') as f:
# f.write(str(count_digits_init).replace(" ", "").replace("]", "}").replace("[", "{"))
n, d = map(int, input().split())
print(count_digits_init[n][d])
cs101/dh_20260909_12_bottle_exchange.cpp
+23
View File
@@ -0,0 +1,23 @@
#include <iostream>
using namespace std;
long long exchange_requirement, empty_bottles_amount, filled_bottles_amount, ans;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> exchange_requirement >> filled_bottles_amount;
while (true) {
ans += filled_bottles_amount;
empty_bottles_amount += filled_bottles_amount;
filled_bottles_amount = empty_bottles_amount / exchange_requirement;
empty_bottles_amount %= exchange_requirement;
if (filled_bottles_amount == 0) { break; }
}
cout << ans << endl;
return 0;
}
cs101/dh_20260909_13_flip.cpp
+39
View File
@@ -0,0 +1,39 @@
#include <iostream>
using namespace std;
constexpr int MAX_N = 151;
bool cards_flipped[MAX_N];
void simulate() {
for (int divider=2; divider<MAX_N; divider++) {
for (int i=divider; i<MAX_N; i+=divider) {
cards_flipped[i] = !cards_flipped[i];
}
}
}
void print_ans() {
int amount = 0;
bool first = true;
for (int i = 1; i < MAX_N; i++) {
if (!cards_flipped[i]) {
if (!first) cout << " ";
cout << "N" << i;
first = false;
amount++;
}
}
cout << endl << amount << endl;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
simulate();
print_ans();
return 0;
}
cs101/dh_20260909_14_encryption.cpp
+90
View File
@@ -0,0 +1,90 @@
#include <cstring>
#include <iostream>
#include <sstream>
#include <vector>
class Coord {
public:
int x = 0, y = 0;
constexpr Coord(int x, int y) : x(x), y(y) {}
constexpr Coord operator+(const Coord other) const {
return {x + other.x, y + other.y};
}
constexpr Coord& operator+=(const Coord other) {
x += other.x, y += other.y;
return *this;
}
constexpr bool operator==(const Coord other) const {
return x == other.x && y == other.y;
}
friend std::ostream& operator<<(std::ostream& os, const Coord coord) {
return os << "(" << coord.x << ", " << coord.y << ")";
}
};
constexpr int MAX_N = 10;
int w, h, grid[MAX_N][MAX_N];
std::string original_str;
std::vector<int> get_nums(const char c) {
if (c == ' ') { return {0, 0}; }
return {(c - 'A' + 1) / 10, (c - 'A' + 1) % 10};
}
Coord next_move(const Coord prev_coord, const Coord prev_facing) {
Coord new_coord = prev_coord + prev_facing;
if (new_coord.x < 0 || new_coord.x >= h ||
new_coord.y < 0 || new_coord.y >= w ||
grid[new_coord.x][new_coord.y] != -1) {
if (prev_facing == Coord{1, 0}) { return {0, -1}; }
if (prev_facing == Coord{0, -1}) { return {-1, 0}; }
if (prev_facing == Coord{-1, 0}) { return {0, 1}; }
if (prev_facing == Coord{0, 1}) { return {1, 0}; }
throw std::invalid_argument("Invalid facing direction");
}
return prev_facing;
}
std::ostream& print_grid(std::ostream& os) {
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
os << (grid[i][j] == -1 ? 0 : grid[i][j]);
}
}
os << std::endl;
return os;
}
void fill_grid(const std::string& s) {
memset(grid, -1, sizeof(grid));
Coord coord = {0, 0}, facing = {0, 1};
for (const char c : s) {
for (const int x : get_nums(c)) {
grid[coord.x][coord.y] = x;
std::clog << "Placing " << x << " at " << coord << std::endl;
print_grid(std::clog);
coord += facing = next_move(coord, facing);
}
}
}
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
getline(std::cin, original_str);
std::stringstream ss(original_str);
ss >> h >> w;
getline(std::cin, original_str);
fill_grid(original_str);
print_grid(std::cout);
return 0;
}
cs101/dh_20260909_15_jusephus.cpp
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#include <iostream>
class CycledLinkedList {
public:
struct Node {
int val = 0;
Node* next = nullptr;
Node* prev = nullptr;
};
Node* head = nullptr; // They are POINTERS, not OBJECTS.
void push_back(int val) {
if (head == nullptr) {
head = new Node({.val = val});
head->next = head;
head->prev = head;
return;
}
Node* node = new Node({.val = val});
head->prev->next = node;
node->prev = head->prev;
head->prev = node;
node->next = head;
}
void remove(Node* node) {
node->prev->next = node->next;
node->next->prev = node->prev;
if (node == head) {
head = node->next;
}
delete node;
}
void init_cycle(int n) {
for (int i = 0; i < n; i++) {
push_back(i);
}
}
friend std::ostream& operator<<(std::ostream& os, const CycledLinkedList& list) {
for (Node* node = list.head->next; node != list.head; node = node->next) {
os << node->val << "<->";
}
os << list.head->val << std::endl;
return os;
}
};
int n, m, target_order;
CycledLinkedList players;
int target_idx() {
for (int i = 0; i < target_order - 1; i++) {
for (int j = 0; j < m - 1; j++) {
players.head = players.head->next;
}
players.remove(players.head);
}
for (int j = 0; j < m - 1; j++) {
players.head = players.head->next;
}
return players.head->val;
}
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
std::cin >> n >> m >> target_order;
players.init_cycle(n);
// std::clog << players << std::endl;
std::cout << target_idx() + 1 << std::endl;
return 0;
}
cs101/dh_20260909_16_swap_bits.cpp
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#include <cstring>
#include <iostream>
constexpr size_t MAX_N = 201;
int n, evaluation_value, original_evaluation_value;
bool bits[MAX_N], original_bits[MAX_N], target_bits[MAX_N];
std::ostream& print_bits(const bool* bits_list = bits, std::ostream& os = std::clog) {
for (int i = 0; i < n; i++) {
os << (bits_list[i] ? 1 : 0);
}
return os;
}
void swap_bits(int i, int j) {
if (bits[i] != target_bits[i]) { evaluation_value--; }
if (bits[j] != target_bits[j]) { evaluation_value--; }
std::swap(bits[i], bits[j]);
if (bits[i] != target_bits[i]) { evaluation_value++; }
if (bits[j] != target_bits[j]) { evaluation_value++; }
}
int evaluate() {
if (evaluation_value == 1) { return 1; }
return evaluation_value / 2;
}
bool dfs(int last_swap_pos = 0, int depth = 0, int target_depth = 0) {
const int h = evaluate();
if (h == 0) { return true; }
if (depth + h > target_depth) {
return false;
}
std::clog << "DEPTH=" << depth << "\th=" << h << "\t";
print_bits() << "\t";
print_bits(target_bits) << std::endl;
for (int i = 0; i < n - 1; i++) {
if (bits[i] == bits[i + 1]) { continue; }
if (i == last_swap_pos) { continue; }
if (bits[i] == target_bits[i] && bits[i + 1] == target_bits[i + 1]) { continue; }
if ((bits[i] == target_bits[i] || bits[i + 1] == target_bits[i + 1]) &&
(bits[i + 1] != target_bits[i] && bits[i] != target_bits[i + 1])) { continue; }
swap_bits(bits[i], bits[i + 1]);
if (dfs(i, depth + 1, target_depth)) { return true; }
swap_bits(bits[i], bits[i + 1]);
}
return false;
}
int ida_star() {
for (int target_depth = evaluate(); target_depth <= 2 * n; target_depth++) {
memcpy(bits, original_bits, n);
evaluation_value = original_evaluation_value;
std::clog << "target_depth:" << target_depth << std::endl;
if (dfs(-1, 0, target_depth)) {
return target_depth;
}
}
return -1;
}
bool init_evaluate() {
int original_sum = 0, target_sum = 0;
for (int i = 0; i < n; i++) {
original_sum += original_bits[i];
target_sum += target_bits[i];
original_evaluation_value += original_bits[i] != target_bits[i];
}
return original_sum == target_sum;
}
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
std::cin >> n;
for (int i = 0; i < n; i++) { std::cin >> original_bits[i]; }
for (int i = 0; i < n; i++) { std::cin >> target_bits[i]; }
if (!init_evaluate()) {
std::cout << -1 << std::endl;
return 0;
}
std::cout << ida_star() << std::endl;
return 0;
}
cs101/dh_20260917_01.cpp
+26
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#include <iostream>
using namespace std;
int afford_year(double salary, double price, int current_year = 1, double current_money = 0) {
if ((current_money += salary) >= price) { return current_year; }
if (current_year > 100) { return -1; }
return afford_year(salary * 1.08, price * 1.10, current_year + 1, current_money);
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
double money, price;
int ans;
cin >> money >> price;
if ((ans = afford_year(money, price)) == -1) {
cout << "Forget it." << endl;
} else {
cout << ans << endl;
}
return 0;
}
cs101/dh_20260917_02_subway.cpp
+34
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#include <cmath>
#include <iomanip>
#include <iostream>
using namespace std;
double get_price(int spent_money, int distance) {
double price = 0;
if (distance <= 6) {
price = 3;
} else {
price = 4;
}
distance -= 12;
if (distance > 0 && distance <= 32 - 12) { price += ceil(distance / 10.0); }
distance -= 32 - 12;
if (distance > 0) { price += ceil(distance / 20.0); }
if (spent_money >= 400) { return price; }
if (spent_money >= 150) { return price * 0.5; }
if (spent_money >= 100) { return price * 0.8; }
return price;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int spent_money, distance;
cin >> spent_money >> distance;
cout << fixed << setprecision(2) << get_price(spent_money, distance) << endl;
return 0;
}
cs101/dh_20260917_03.cpp
+24
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#include <iostream>
#include <sstream>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
string token;
float coord[2];
for (int i = 0; getline(cin, token, ','); i++) {
coord[i] = stof(token);
}
if (-1 <= coord[0] && coord[0] <= 1 && -1 <= coord[1] && coord[1] <= 1) {
cout << "yes" << endl;
} else {
cout << "no" << endl;
}
return 0;
}
cs101/dh_20260917_04.cpp
+37
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#include <iostream>
#include <vector>
using namespace std;
vector<int> calc_factors( int num) {
vector<int> factors;
for (const int factor : {3,5,7}) {
if (num % factor == 0) {
factors.push_back(factor);
}
}
return factors;
}
int num;
vector<int> factors;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> num;
factors = calc_factors(num);
if (factors.empty()) {
cout << "n" << endl;
} else {
int temp = factors[factors.size() - 1];
factors.pop_back();
for (const int factor : factors) {
cout << factor << " ";
}
cout << temp << endl;
}
return 0;
}
cs101/dh_20260917_05_vote.cpp
+28
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#include <iostream>
using namespace std;
constexpr int MAX_X = 15;
int n, winner;
unsigned int bucket[MAX_X + 1];
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n;
for (int _ = 0; _ < n; _++) {
int x;
cin >> x;
bucket[x]++;
}
winner = 0;
for (int x = 1; x <= MAX_X; x++) {
if (bucket[x] > bucket[winner]) {
winner = x;
}
}
cout << winner << endl;
return 0;
}
cs101/dh_20260923_01_bike_or_walk.cpp
+29
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#include <iostream>
double get_bike_time(double distance) {
return 27 + 23 + distance / 3;
}
double get_walk_time(double distance) {
return distance * 5 / 6;
}
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int distance;
std::cin >> distance;
while (std::cin >> distance) {
double diff = get_bike_time(distance) - get_walk_time(distance);
if (diff < 1e-8 && diff > -1e-8) {
std::cout << "All" << std::endl;
} else if (diff < 0) {
std::cout << "Bike" << std::endl;
} else {
std::cout << "Walk" << std::endl;
}
}
return 0;
}
cs101/dh_20260923_02_draw_rectangles.cpp
+47
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#include <iostream>
void print_filled_rectangle(int h, int w, char c) {
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
std::cout << c;
}
std::cout << std::endl;
}
}
void print_unfilled_rectangle(int h, int w, char c) {
for (int i = 0; i < w; i++) {
std::cout << c;
}
std::cout << std::endl;
for (int i = 0; i < h - 2; i++) {
std::cout << c;
for (int j = 0; j < w - 2; j++) {
std::cout << " ";
}
std::cout << c << std::endl;
}
for (int i = 0; i < w; i++) {
std::cout << c;
}
std::cout << std::endl;
}
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int h, w;
char c;
bool filled;
while (std::cin >> h >> w >> c >> filled) {
if (filled) {
print_filled_rectangle(h, w, c);
} else {
print_unfilled_rectangle(h, w, c);
}
}
return 0;
}
cs101/dh_20260923_03.cpp
+31
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#include <iostream>
#include <cmath>
int get_digit(int num, int digit) {
num /= static_cast<int>(std::pow(10, digit));
// std::clog << num << " is " << digit << "->" << std::endl;
return num % 10;
}
bool is_good_num(int num) {
return get_digit(num, 0)
- (get_digit(num, 3) + get_digit(num, 2) + get_digit(num, 1))
> 0;
}
int n, ans;
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
std::cin >> n;
for (int _ = 0; _ < n; _++) {
int num;
std::cin >> num;
ans += is_good_num(num);
}
std::cout << ans << std::endl;
return 0;
}
cs101/dh_20260923_04_lamps.cpp
+30
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#include <iostream>
constexpr int MAX_N = 1001;
int n;
bool lamps[MAX_N]; // 第 0 盏放弃
void simulate() {
for (int i = 1; i <= n; i++) {
for (int j = 0; j <= n; j += i) {
lamps[j] = !lamps[j];
}
}
}
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
std::cin >> n;
simulate();
for (int i = 1; i <= n; i++) {
if (!lamps[i]) {
std::cout << i << " ";
}
}
std::cout << std::endl;
return 0;
}
dsa/linear_list/dsa_0202_card_stacking.cpp
+71
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#include <algorithm>
#include <cassert>
#include <iostream>
#include <vector>
using namespace std;
class CycledLinkedList {
public:
struct Node {
int prev_id, next_id;
};
vector<Node> nodes;
explicit CycledLinkedList(int n = 1) { nodes.reserve(n); }
void init_cycle(int n) {
assert(nodes.empty());
nodes.reserve(n);
for (int i = 0; i < n; i++) {
nodes.push_back({(i + n - 1) % n, (i + 1) % n});
}
}
void remove_node(int id) {
assert(id >= 0 && id < nodes.size());
if (nodes[id].prev_id != -1) { nodes[nodes[id].prev_id].next_id = nodes[id].next_id; }
if (nodes[id].next_id != -1) { nodes[nodes[id].next_id].prev_id = nodes[id].prev_id; }
nodes[id].prev_id = nodes[id].next_id = -1;
}
};
int cow_amount, good_cards_amount, cards_amount, pass_amount;
CycledLinkedList cards;
vector<int> simulate() {
vector<int> good_nodes;
int current_node = 0, previous_node = -1, cow = 1;
while (good_nodes.size() < good_cards_amount) {
// clog << "current_node: " << current_node << endl;
if (cow == 0) { good_nodes.push_back(current_node); }
previous_node = current_node, current_node = cards.nodes[current_node].next_id;
cards.remove_node(previous_node);
if (previous_node == current_node) { break; }
cow = (cow + 1) % cow_amount;
for (int _ = 0; _ < pass_amount; _++) {
current_node = cards.nodes[current_node].next_id;
}
}
return good_nodes;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> cow_amount >> cards_amount >> pass_amount;
good_cards_amount = cards_amount / cow_amount;
cards.init_cycle(cards_amount);
vector<int> good_nodes = simulate();
sort(good_nodes.begin(), good_nodes.end());
for (const int node : good_nodes) {
cout << node + 1 << endl;
}
return 0;
}
dsa/linear_list/dsa_0203_string_insertion.cpp
+29
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#include <iostream>
using namespace std;
string inserted_string(string s, const string& sub_s) {
int max_char_pos = -1;
char max_char = 0;
for (int i = 0; i < s.size(); i++) {
if (s[i] > max_char) {
max_char = s[i];
max_char_pos = i;
}
}
s.insert(max_char_pos + 1, sub_s); // STL 偷懒
return s;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
string s, sub_s;
while (cin >> s >> sub_s) {
cout << inserted_string(s, sub_s) << endl;
}
return 0;
}
dsa/linear_list/dsa_0204_prefix_cycle.cpp
+41
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@@ -0,0 +1,41 @@
#include <cstring>
#include <iostream>
using namespace std;
constexpr int MAX_N = 1e6 + 5;
int max_period[MAX_N];
void log_array(const int arr[], const size_t n) {
for (size_t i = 0; i < n; i++) {
clog << arr[i] << " ";
}
clog << endl;
}
void solve(string s) {
memset(max_period, 0, sizeof(max_period));
max_period[0] = 1;
for (int i = 1; i < s.size(); i++) {
if (s[i - max_period[i - 1]] == s[i]) {
max_period[i] = max_period[i - 1];
} else {
max_period[i] = i + 1;
}
}
log_array(max_period, s.size());
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n;
string s;
while (cin >> n && n) {
cin >> s;
solve(s);
}
return 0;
}
dsa/linear_list/dsa_0205_polynomial_addition.cpp
+49
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@@ -0,0 +1,49 @@
#include <cmath>
#include <iostream>
#include <map>
using namespace std;
class Polynomial : public map<unsigned int, long long, greater<>> {
public:
Polynomial operator+=(const Polynomial& other) {
for (const auto& [exp, coef] : other) {
(*this)[exp] += coef;
}
return *this;
}
void print() const {
for (const auto& [exp, coef] : *this) {
if (coef == 0) { continue; }
cout << "[ " << coef << " " << exp << " ] ";
}
cout << endl;
}
};
Polynomial input_polynomial() {
long long coefficient;
int exponent;
Polynomial polynomial;
while (cin >> coefficient >> exponent && exponent >= 0) {
polynomial[exponent] += coefficient;
}
return polynomial;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin >> n;
for (int _ = 0; _ < n; _++) {
Polynomial polynomial1 = input_polynomial();
Polynomial polynomial2 = input_polynomial();
polynomial1 += polynomial2;
polynomial1.print();
}
return 0;
}
dsa/linear_list/dsa_0206_binary_query.cpp
+55
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@@ -0,0 +1,55 @@
#include <iostream>
using namespace std;
constexpr size_t MAX_N = 100005, MAX_DIGITS = 16;
int n, m;
int bits[MAX_DIGITS];
void print_bits(ostream& os = clog) {
for (const int bit : bits) { os << bit; }
os << endl;
}
void update_bits(const int num) {
for (int i = 0; i < MAX_DIGITS; i++) {
bits[i] += (num >> i) & 1;
}
}
void add(int num) {
for (int i = 0; i < MAX_DIGITS; i++) {
const bool current_bit = num & 1;
num >>= 1;
if (current_bit == 0) { continue; }
num += bits[i];
bits[i] = n - bits[i];
print_bits();
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> m;
for (int _ = 0; _ < n; _++) {
int num;
cin >> num;
update_bits(num);
}
for (int _ = 0; _ < m; _++) {
print_bits();
char op;
int x;
cin >> op >> x;
if (op == 'Q') {
cout << bits[x] << endl;
} else {
add(x);
}
}
return 0;
}
dsa/linear_list/dsa_0217_magic_square.cpp
+53
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@@ -0,0 +1,53 @@
#include <iostream>
#include <cassert>
using namespace std;
using Coord = pair<int, int>;
constexpr int MAX_N = 45;
int n;
int magic_square[MAX_N][MAX_N];
Coord next_coord(Coord current_coord) {
Coord next_coord = current_coord;
next_coord.first = (next_coord.first + n - 1) % n;
next_coord.second = (next_coord.second + 1) % n;
if ((current_coord.first == 0 && current_coord.second == n - 1)
|| magic_square[next_coord.first][next_coord.second] != 0) {
return {(current_coord.first + 1) % n, current_coord.second};
}
return next_coord;
}
void print_magic_square(ostream& os = cout) {
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
os << magic_square[i][j] << " ";
}
os << endl;
}
os << endl;
}
void fill_magic_square() {
Coord current_coord = {0, (n - 1) / 2};
for (int num = 1; num <= n * n; num++) {
assert(magic_square[current_coord.first][current_coord.second] == 0);
magic_square[current_coord.first][current_coord.second] = num;
current_coord = next_coord(current_coord);
// print_magic_square(clog);
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n;
n = 2 * n - 1;
fill_magic_square();
print_magic_square();
return 0;
}
graph/ECNA2001_sort_letters.cpp
+73 -2
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@@ -1,10 +1,81 @@
#include <iostream> #include <iostream>
#include <vector>
#include <cassert>
#include <queue>
using namespace std; using namespace std;
class Graph {
public:
struct Edge {
int target_vertex, next_edge;
};
vector<Edge> edges;
vector<int> head_edges;
void init(int vertices_amount, int edges_amount = 1) {
edges.reserve(edges_amount);
head_edges.resize(vertices_amount, -1);
}
void add_edge(int source_vertex, int target_vertex) {
edges.push_back({target_vertex, head_edges[source_vertex]});
head_edges[source_vertex] = static_cast<int>(edges.size()) - 1;
}
void remove_edge(int source_vertex, int target_vertex) {
for (int edge = head_edges[source_vertex]; edge != -1; edge = edges[edge].next_edge) {
if (edges[edge].target_vertex == target_vertex) {
head_edges[source_vertex] = edges[edge].next_edge;
// edges.erase(edges.begin() + edge);
break;
}
}
}
[[nodiscard]] bool accessible(int source_vertex, int target_vertex) const {
vector<bool> visited(head_edges.size(), false);
queue<int> q;
q.push(source_vertex);
visited[source_vertex] = true;
while (!q.empty()) {
int current_vertex = q.front();
q.pop();
for (int edge = head_edges[current_vertex]; edge != -1; edge = edges[edge].next_edge) {
int next_vertex = edges[edge].target_vertex;
if (next_vertex == target_vertex) {
return true;
}
if (!visited[next_vertex]) {
visited[next_vertex] = true;
q.push(next_vertex);
}
}
}
return false;
}
[[nodiscard]] bool cycled(int source_vertex) const {
return accessible(source_vertex, source_vertex);
}
};
int letters_amount, edges_amount;
Graph graph;
void add_edge_by_string(const string& s) {
assert(s.length() == 3);
graph.add_edge(s[0] - 'A', s[2] - 'A');
}
int main() { int main() {
ios::sync_with_stdio(false); ios::sync_with_stdio(false);
cin.tie(nullptr); cin.tie(nullptr);
cin >> letters_amount >> edges_amount;
graph.init(letters_amount, edges_amount);
return 0; return 0;
} }
graph/USACO06DECs_cow_picnic.cpp
+83
View File
@@ -0,0 +1,83 @@
#include <cstring>
#include <iostream>
#include <vector>
using namespace std;
class Graph {
public:
struct Edge {
int target_vertex = -1;
int next_edge = -1;
};
vector<int> head_edges;
vector<Edge> edges;
explicit Graph(int vertices_amount = 0, int edges_amount = 0) : head_edges(vertices_amount, -1) {
edges.reserve(edges_amount);
}
void init(int vertices_amount, int edges_amount) {
head_edges.resize(vertices_amount, -1);
edges.reserve(edges_amount);
}
void add_edge(int source_vertex, int target_vertex) {
edges.push_back({target_vertex, head_edges[source_vertex]});
head_edges[source_vertex] = static_cast<int>(edges.size()) - 1;
}
};
constexpr int MAX_V = 1e3 + 5;
int cows_amount, vertices_amount, edges_amount, ans;
vector<int> cows_locations;
Graph graph;
bool vis[MAX_V];
int vertices_accessibility[MAX_V];
void dfs(int start_vertex, int current_vertex) {
if (vis[current_vertex]) { return; }
vis[current_vertex] = true;
vertices_accessibility[current_vertex]++;
for (int edge = graph.head_edges[current_vertex]; edge != -1; edge = graph.edges[edge].next_edge) {
int next_vertex = graph.edges[edge].target_vertex;
dfs(start_vertex, next_vertex);
}
}
void dfs(int start_vertex) {
memset(vis, false, sizeof(vis));
dfs(start_vertex, start_vertex);
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> cows_amount >> vertices_amount >> edges_amount;
cows_locations.resize(cows_amount);
graph.init(vertices_amount, edges_amount);
for (int i = 0; i < cows_amount; i++) {
cin >> cows_locations[i], cows_locations[i]--;
}
for (int i = 0; i < edges_amount; i++) {
int source_vertex, target_vertex;
cin >> source_vertex >> target_vertex, source_vertex--, target_vertex--;
graph.add_edge(source_vertex, target_vertex);
}
for (const int cow : cows_locations) {
dfs(cow);
}
for (int i = 0; i < vertices_amount; i++) {
if (vertices_accessibility[i] == cows_amount) {
ans++;
}
}
cout << ans << endl;
return 0;
}
luogu_P1160_biodir_linked_list.cpp
+2 -2
View File
@@ -4,7 +4,7 @@
using namespace std; using namespace std;
class LinkedList { class CycledLinkedList {
public: public:
struct Node { struct Node {
int previous = -1, next = -1; int previous = -1, next = -1;
@@ -48,7 +48,7 @@ public:
} }
}; };
LinkedList l; CycledLinkedList l;
int main() { int main() {
ios::sync_with_stdio(false); ios::sync_with_stdio(false);