CMakeLists.txt

.gitignore

@@ -1,4 +1,5 @@
 .venv
+cmake-build-debug
 /*.exe
 /*.dSYM
 

.idea/MarsCodeWorkspaceAppSettings.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="com.codeverse.userSettings.MarscodeWorkspaceAppSettingsState">
+    <option name="chatAppRouterInfo" value="chat-session" />
     <option name="progress" value="1.0" />
   </component>
 </project>

.idea/editor.xml

@@ -255,6 +255,7 @@
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     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/EXPORT_DECLARATION_BRACES/@EntryValue" value="END_OF_LINE" type="string" />
+    <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/INDENT_CASE_FROM_SWITCH/@EntryValue" value="true" type="bool" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/INVOCABLE_DECLARATION_BRACES/@EntryValue" value="END_OF_LINE" type="string" />
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.idea/workspace.xml

@@ -20,7 +20,29 @@
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   <component name="CMakeRunConfigurationManager">
     <generated>
-      <config projectName="Project" targetName="exercises" />
+      <config projectName="exercises" targetName="pojcs101_M02692_12_coins" />
+      <config projectName="exercises" targetName="luogu_ez_B3628" />
+      <config projectName="exercises" targetName="pojcs101_M01328_radar_greedy" />
+      <config projectName="exercises" targetName="pojcs101_M01852_ants_falling" />
+      <config projectName="exercises" targetName="pojcs101_M02692_12_coins_WRONG" />
+      <config projectName="exercises" targetName="pojcs101_M01321_chest_grid" />
+      <config projectName="exercises" targetName="pojcs101_M02039_snakey_encryption" />
+      <config projectName="exercises" targetName="pojcs101_E02883" />
+      <config projectName="exercises" targetName="pojcs101_M02694_polish_notation_tree" />
+      <config projectName="exercises" targetName="CMakeCXXCompilerId" />
+      <config projectName="exercises" targetName="pojcs101_M01017_6_boxes" />
+      <config projectName="exercises" targetName="apple-sdk" />
+      <config projectName="exercises" targetName="pojcs101_M01088_ski_WRONG" />
+      <config projectName="exercises" targetName="pojcs101_M02431_cows_gas_leak_WRONG" />
+      <config projectName="exercises" targetName="pojcs101_M01922_ride_follower" />
+      <config projectName="exercises" targetName="luogu_template_dsu_P3367" />
+      <config projectName="exercises" targetName="pojcs101_M01002_memorable_number" />
+      <config projectName="exercises" targetName="pojcs101_M01088_ski" />
+      <config projectName="exercises" targetName="pojcs101_M02524_ubiquitous_religions_dsu" />
+      <config projectName="exercises" targetName="pojcs101_E01003" />
+      <config projectName="exercises" targetName="pojcs101_M01328_radar_greedy_WRONG" />
+      <config projectName="exercises" targetName="pojcs101_E01218" />
+      <config projectName="exercises" targetName="exercises" />
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@@ -30,10 +52,14 @@
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-      <change afterPath="$PROJECT_DIR$/pojcs101_M02039_snakey_encryption.cpp" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/CMakeLists.txt" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/pojcs101_M02431_cows_gas_leak_WRONG.cpp" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/luogu_template_dsu_P3367.cpp" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/pojcs101_M02524_ubiquitous_religions_dsu.cpp" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/pojcs101_M02694_polish_notation_tree.cpp" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.gitignore" beforeDir="false" afterPath="$PROJECT_DIR$/.gitignore" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/MarsCodeWorkspaceAppSettings.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/MarsCodeWorkspaceAppSettings.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/editor.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/editor.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/pojcs101_M02524_ubiquitous_religions_dsu.cpp" beforeDir="false" afterPath="$PROJECT_DIR$/pojcs101_M02524_ubiquitous_religions_dsu.cpp" afterDir="false" />
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@@ -53,6 +79,7 @@
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         <option value="C++ Single file program" />
         <option value="C++ Single file for OJ" />
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@@ -82,94 +109,214 @@
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+      </method>
+    </configuration>
+    <configuration name="pojcs101_M01017_6_boxes" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M01017_6_boxes" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M01017_6_boxes">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M01088_ski" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M01088_ski" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M01088_ski">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M01088_ski_WRONG" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M01088_ski_WRONG" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M01088_ski_WRONG">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M01321_chest_grid" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M01321_chest_grid" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M01321_chest_grid">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M01328_radar_greedy" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M01328_radar_greedy" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M01328_radar_greedy">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M01328_radar_greedy_WRONG" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M01328_radar_greedy_WRONG" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M01328_radar_greedy_WRONG">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M01852_ants_falling" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M01852_ants_falling" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M01852_ants_falling">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M01922_ride_follower" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M01922_ride_follower" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M01922_ride_follower">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M02039_snakey_encryption" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M02039_snakey_encryption" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M02039_snakey_encryption">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M02431_cows_gas_leak_WRONG" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M02431_cows_gas_leak_WRONG" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M02431_cows_gas_leak_WRONG">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M02524_ubiquitous_religions_dsu" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M02524_ubiquitous_religions_dsu" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M02524_ubiquitous_religions_dsu">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M02692_12_coins" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M02692_12_coins" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M02692_12_coins">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M02692_12_coins_WRONG" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M02692_12_coins_WRONG" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M02692_12_coins_WRONG">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="pojcs101_M02694_polish_notation_tree" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="exercises" TARGET_NAME="pojcs101_M02694_polish_notation_tree" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="exercises" RUN_TARGET_NAME="pojcs101_M02694_polish_notation_tree">
+      <method v="2">
+        <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <list>
+      <item itemvalue="CMake 应用程序.apple-sdk" />
+      <item itemvalue="CMake 应用程序.CMakeCXXCompilerId" />
+      <item itemvalue="CMake 应用程序.luogu_ez_B3628" />
+      <item itemvalue="CMake 应用程序.luogu_template_dsu_P3367" />
+      <item itemvalue="CMake 应用程序.pojcs101_E01003" />
+      <item itemvalue="CMake 应用程序.pojcs101_E01218" />
+      <item itemvalue="CMake 应用程序.pojcs101_E02883" />
+      <item itemvalue="CMake 应用程序.pojcs101_M01002_memorable_number" />
+      <item itemvalue="CMake 应用程序.pojcs101_M01017_6_boxes" />
+      <item itemvalue="CMake 应用程序.pojcs101_M01088_ski" />
+      <item itemvalue="CMake 应用程序.pojcs101_M01088_ski_WRONG" />
+      <item itemvalue="CMake 应用程序.pojcs101_M01321_chest_grid" />
+      <item itemvalue="CMake 应用程序.pojcs101_M01328_radar_greedy" />
+      <item itemvalue="CMake 应用程序.pojcs101_M01328_radar_greedy_WRONG" />
+      <item itemvalue="CMake 应用程序.pojcs101_M01852_ants_falling" />
+      <item itemvalue="CMake 应用程序.pojcs101_M01922_ride_follower" />
+      <item itemvalue="CMake 应用程序.pojcs101_M02039_snakey_encryption" />
+      <item itemvalue="CMake 应用程序.pojcs101_M02431_cows_gas_leak_WRONG" />
+      <item itemvalue="CMake 应用程序.pojcs101_M02524_ubiquitous_religions_dsu" />
+      <item itemvalue="CMake 应用程序.pojcs101_M02692_12_coins" />
+      <item itemvalue="CMake 应用程序.pojcs101_M02692_12_coins_WRONG" />
+      <item itemvalue="CMake 应用程序.pojcs101_M02694_polish_notation_tree" />
+    </list>
   </component>
   <component name="SharedIndexes">
     <attachedChunks>

CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.10)
+project(exercises)
+
+# 设置 C++ 标准（例如 C++17）
+set(CMAKE_CXX_STANDARD 17)
+
+# 递归查找当前目录下所有的 .cpp 文件
+file(GLOB_RECURSE SOURCES "*.cpp")
+
+# 遍历所有找到的 .cpp 文件，为每个文件单独创建一个可执行目标
+foreach(source ${SOURCES})
+    # 获取文件名（不带扩展名）作为可执行文件的名字
+    get_filename_component(name ${source} NAME_WE)
+    add_executable(${name} ${source})
+endforeach()

luogu_template_dsu_P3367.cpp

@@ -0,0 +1,48 @@
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+class Dsu {
+public:
+    struct Node {
+        size_t parent, size;
+    };
+
+    vector<Node> nodes;
+
+    explicit Dsu(const size_t size) : nodes(size) {
+        for (size_t i = 0; i < size; i++) {
+            nodes[i] = {.parent = i, .size = 0};
+        }
+    }
+
+    size_t find(const size_t x) {
+        if (nodes[x].parent == x) { return x; }
+        return nodes[x].parent = find(nodes[x].parent);
+    }
+
+    void unite(size_t x, size_t y) {
+        if ((x = find(x)) == (y = find(y))) { return; }
+        if (nodes[x].size > nodes[y].size) { swap(x, y); }
+        nodes[x].parent = y;
+        nodes[y].size += nodes[x].size;
+    }
+};
+
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    int elements_count, operations_count;
+    cin >> elements_count >> operations_count;
+    Dsu dsu(elements_count);
+    for (int _ = 0; _ < operations_count; _++) {
+        int op, x, y;
+        cin >> op >> x >> y;
+        if (op == 1) { dsu.unite(x, y); }
+        if (op == 2) { cout << (dsu.find(x) == dsu.find(y) ? 'Y' : 'N') << endl; }
+    }
+
+    return 0;
+}

pojcs101_M02524_ubiquitous_religions_dsu.cpp

@@ -34,5 +34,20 @@ int main() {
     ios::sync_with_stdio(false);
     cin.tie(nullptr);
 
+    size_t students_count, pairs_count;
+    for (int case_id = 1; cin >> students_count >> pairs_count && students_count; case_id++) {
+        cout << "Case " << case_id << ": ";
+        Dsu dsu(students_count);
+        size_t x, y, ans = 0;
+        for (int _ = 0; _ < pairs_count; _++) {
+            cin >> x >> y;
+            dsu.unite(x - 1, y - 1);
+        }
+        for (size_t node_id = 0; node_id < students_count; node_id++) {
+            ans += node_id == dsu.find(node_id);
+        }
+        cout << ans << endl;
+    }
+
     return 0;
 }

pojcs101_M02694_polish_notation_tree.cpp

@@ -0,0 +1,97 @@
+#include <iostream>
+#include <string>
+#include <optional>
+#include <vector>
+#include <variant>
+#include <memory>
+#include <tuple>
+#include <stdexcept>
+#include <sstream>
+#include <cstdio>
+
+using namespace std;
+
+
+class NotationTree {
+public:
+    using Data = variant<double, char>;
+
+    struct TreeNode {
+        Data data;
+        optional<size_t> left_idx, right_idx;
+
+        explicit TreeNode(const string& value) { data = parse_string(value); }
+        explicit TreeNode(const Data value) { data = value; }
+
+        [[nodiscard]] bool is_operator() const {
+            return std::holds_alternative<char>(data);
+        }
+
+        [[nodiscard]] char get_operator() const {
+            if (!is_operator()) { throw invalid_argument("Node is not operator"); }
+            return get<char>(data);
+        }
+
+        [[nodiscard]] double get_number() const {
+            if (is_operator()) { throw invalid_argument("Node is operator"); }
+            return get<double>(data);
+        }
+    };
+
+    static Data parse_string(const string& value) {
+        if (value == "+" || value == "-" || value == "*" || value == "/") {
+            return value[0];
+        }
+        return stod(value);
+    }
+
+    vector<TreeNode> nodes;
+
+    tuple<size_t, size_t> build_from_poland(const vector<Data>& datas, const size_t start_idx = 0) {
+        size_t this_idx = nodes.size();
+        nodes.emplace_back(datas[start_idx]);
+        if (!nodes.back().is_operator()) { return make_tuple(this_idx, start_idx + 1); }
+        auto [left_idx, right_start_idx] = build_from_poland(datas, start_idx + 1);
+        nodes[this_idx].left_idx = left_idx;
+        auto [right_idx, right_end_idx] = build_from_poland(datas, right_start_idx);
+        nodes[this_idx].right_idx = right_idx;
+        return make_tuple(this_idx, right_end_idx);
+    }
+
+    double calculate(const size_t idx = 0) {
+        if (!nodes[idx].is_operator()) {
+            return nodes[idx].get_number();
+        }
+        if (!nodes[idx].left_idx.has_value() || !nodes[idx].right_idx.has_value()) {
+            throw invalid_argument("Tree is not complete");
+        }
+        const double left_result = calculate(nodes[idx].left_idx.value()),
+                     right_result = calculate(nodes[idx].right_idx.value());
+        switch (nodes[idx].get_operator()) {
+            case '+': return left_result + right_result;
+            case '-': return left_result - right_result;
+            case '*': return left_result * right_result;
+            case '/': return left_result / right_result;
+            default: throw invalid_argument("Invalid operator");
+        }
+    }
+};
+
+
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    string poland_notation, token;
+    vector<NotationTree::Data> datas;
+    getline(cin, poland_notation);
+    stringstream ss(poland_notation);
+    while (ss >> token) {
+        datas.push_back(NotationTree::parse_string(token));
+    }
+    NotationTree tree;
+    tree.build_from_poland(datas);
+    printf("%f\n", tree.calculate());
+
+    return 0;
+}