2

2026-07-24 13:46:36 +08:00
parent 536a697566
commit 2b6dc69bde
7 changed files with 305 additions and 36 deletions
@@ -1,2 +0,0 @@
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 </project>
@@ -0,0 +1,42 @@
+import sys
+
+
+class Solution:
+    def __init__(self):
+        self.number_set: set[int] = set()  # 哈希表，全 O(1)
+        self.longest_length: int = 1
+
+    def longestConsecutive(self, nums: list[int]) -> int:
+        if not nums: return 0
+        self.number_set = set(nums)  # O(n)
+        for n in self.number_set:
+            # n = self.number_set.pop()
+            # print(n, file=sys.stderr)
+            current_length: int = 1
+            if n + 1 in self.number_set:
+                continue
+            # pointer = n
+            # while True:
+            #     if pointer + 1 in self.number_set:
+            #         pointer += 1
+            #         current_length += 1
+            #         self.number_set.remove(pointer)
+            #     else:
+            #         break
+            pointer = n
+            while True:
+                if pointer - 1 in self.number_set:
+                    pointer -= 1
+                    current_length += 1
+                    # self.number_set.remove(pointer)
+                else:
+                    break
+            self.longest_length = max(current_length, self.longest_length)
+
+        return self.longest_length
+
+
+if __name__ == '__main__':
+    sol = Solution()
+    print(sol.longestConsecutive([100, 4, 200, 1, 3, 2]))
+    print(sol.longestConsecutive([0, 3, 7, 2, 5, 8, 4, 6, 0, 1]))
@@ -0,0 +1,78 @@
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+int package_requirement(vector<int> box_counts) {
+    int answer = box_counts[5] + box_counts[4] + box_counts[3];
+    // 5x5
+    box_counts[0] -= min(box_counts[4] * 11, box_counts[0]);
+    // 4x4
+    box_counts[1] -= box_counts[3] * 5;
+    if (box_counts[1] < 0) {
+        // 放 1x1
+        box_counts[0] -= min(-box_counts[1] * 4, box_counts[0]);
+        box_counts[1] = 0;
+    }
+    // 3x3
+    if (box_counts[2]) {
+        answer += (box_counts[2] - 1) / 4 + 1;
+        switch (4 - box_counts[2] % 4) {
+            case 4: break;
+            case 1:
+                box_counts[1]--;
+                box_counts[0] -= min(5, box_counts[0]);;
+                // if (box_counts[1]) {
+                //     box_counts[1]--;
+                //     box_counts[0] -= min(5, box_counts[0]);;
+                // } else {
+                //     box_counts[0] -= min(9, box_counts[0]);
+                // }
+                break;
+            case 2:
+                box_counts[1] -= 3;
+                box_counts[0] -= min(6, box_counts[0]);
+                break;
+            case 3:
+                box_counts[1] -= 5;
+                box_counts[0] -= min(7, box_counts[0]);
+                break;
+            default:
+                throw logic_error("remaining_3x3_areas must be 4(0), 1, 2, or 3");
+        }
+        if (box_counts[1] < 0) {
+            // 放 1x1
+            box_counts[0] -= min(-box_counts[1] * 4, box_counts[0]);
+            box_counts[1] = 0;
+        }
+    }
+    // 2x2
+    if (box_counts[1]) {
+        answer += (box_counts[1] - 1) / 9 + 1;
+        int remaining_2x2_areas = 9 - box_counts[1] % 9;
+        if (remaining_2x2_areas == 9) { remaining_2x2_areas = 0; }
+        box_counts[0] -= min(remaining_2x2_areas * 4, box_counts[0]);
+    }
+    // 1x1
+    if (box_counts[0]) {
+        answer += (box_counts[0] - 1) / 36 + 1;
+    }
+    return answer;
+}
+
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+    vector<int> box_counts(6);
+
+    for (;;) {
+        cin >> box_counts[0] >> box_counts[1] >> box_counts[2] >> box_counts[3] >> box_counts[4] >> box_counts[5];
+        if (box_counts[0] == 0 && box_counts[1] == 0 && box_counts[2] == 0 && box_counts[3] == 0 && box_counts[4] == 0
+            && box_counts[5] == 0) {
+            break;
+        }
+        cout << package_requirement(box_counts) << endl;
+    }
+
+    return 0;
+}
@@ -0,0 +1,65 @@
+#include <cstring>
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+void solveGroup() {
+    bool tempList[12] = {false};
+    bool realCoins[12] = {false};
+    vector<pair<string, string> > lighterResults;
+    for (int _ = 0; _ < 3; _++) {
+        string s1, s2, comparison;
+        cin >> s1 >> s2 >> comparison;
+        if (comparison == "even") {
+            for (const char c: s1 + s2) {
+                realCoins[c - 'A'] = true;
+            }
+        } else {
+            memset(tempList, false, sizeof(tempList));
+            for (const char c: s1 + s2) { tempList[c - 'A'] = true; }
+            for (int i = 0; i < 12; i++) {
+                if (!tempList[i]) { realCoins[i] = true; }
+            }
+
+            if (comparison == "down") {
+                lighterResults.emplace_back(s2, s1);
+            } else {
+                lighterResults.emplace_back(s1, s2);
+            }
+        }
+    }
+    for (int i = 0; i < 12; i++) {
+        if (realCoins[i]) continue;
+        int conclusion = 0;
+        for (const auto &[s1, s2]: lighterResults) {
+            if (s1.find(static_cast<char>(i + 'A')) != string::npos) {
+                if (conclusion == 1) {
+                    conclusion = -2;
+                    break;
+                }
+                conclusion = -1;
+            } else if (s2.find(static_cast<char>(i + 'A')) != string::npos) {
+                if (conclusion == -1) {
+                    conclusion = -2;
+                    break;
+                }
+                conclusion = 1;
+            }
+        }
+        if (conclusion == -2 || conclusion == 0) { continue; }
+        cout << static_cast<char>(i + 'A') << " is the counterfeit coin and it is "
+                << (conclusion == 1 ? "light." : "heavy.") << endl;
+    }
+}
+
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+    int n;
+    cin >> n;
+    for (int _ = 0; _ < n; _++) {
+        solveGroup();
+    }
+    return 0;
+}
@@ -0,0 +1,80 @@
+#include <cstring>
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+void solveGroup() {
+    int fakeValue[12] = {};
+    bool tempList[12] = {false};
+    // int realCount = 0;
+    vector<pair<string, string> > lighterResults;
+    for (int _ = 0; _ < 3; _++) {
+        string s1, s2, comparison;
+        cin >> s1 >> s2 >> comparison;
+        memset(tempList, false, sizeof(tempList));
+        if (comparison == "even") {
+            // 八个都是真的
+            for (const char c: s1 + s2) {
+                tempList[c - 'A'] = true;
+                fakeValue[c - 'A'] -= 120;
+            }
+            for (int i = 0; i < 12; i++) {
+                if (!tempList[i]) { fakeValue[i]++; }
+            }
+        } else {
+            // 剩下四个是真的
+            for (const char c: s1 + s2) {
+                tempList[c - 'A'] = true;
+                fakeValue[c - 'A']++;
+            }
+            for (int i = 0; i < 12; i++) {
+                if (!tempList[i]) { fakeValue[i] -= 120; }
+            }
+            // 不着急比
+            if (comparison == "down") {
+                lighterResults.emplace_back(s2, s1);
+            } else {
+                lighterResults.emplace_back(s1, s2);
+            }
+        }
+        for (const int val: fakeValue) {
+            clog << val << endl;
+        }
+    }
+
+    int theFakeOne = -1, maxFakeVal = -120;
+    for (int i = 0; i < 12; i++) {
+        if (fakeValue[i] > maxFakeVal) {
+            maxFakeVal = fakeValue[i];
+            theFakeOne = i;
+        }
+    }
+    for (const auto &[s1, s2]: lighterResults) {
+        for (const char c: s1) {
+            if (c == 'A' + theFakeOne) {
+                cout << static_cast<char>(theFakeOne + 'A') << " is the counterfeit coin and it is heavy." << endl;
+                return;
+            }
+        }
+        for (const char c: s2) {
+            if (c == 'A' + theFakeOne) {
+                cout << static_cast<char>(theFakeOne + 'A') << " is the counterfeit coin and it is light." << endl;
+                return;
+            }
+        }
+    }
+}
+
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    int n;
+    cin >> n;
+    for (int _ = 0; _ < n; _++) {
+        solveGroup();
+    }
+
+    return 0;
+}