Submission #852923

#	Time	Username	Problem	Language	Result	Execution time	Memory
852923		Benmath	Election (BOI18_election)	C++14	28 / 100	3033 ms	1980 KiB

election

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#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n, q;
    cin >> n;
    string s;
    cin >> s;
    cin >> q;
    vector<int>ans;
    while (q--){
        int a, b;
        cin >> a >> b;
        a--;
        b--;
        vector<int>v;
        for(int i = a; i <= b; i++){
            if(s[i] == 'C'){
                v.push_back(1);
            }else{
                v.push_back(-1);
            }
        }
        int sum = 0;
        for(int i = 0; i < v.size(); i++){
            sum = sum + v[i];
            if(sum < 0){
                v[i] = 0;
                sum = 0;
            }
        }
        sum = 0;
        for(int i = v.size()-1; i >= 0; i--){
            sum = sum + v[i];
            if(sum < 0){
                v[i] = 0;
                sum = 0;
            }
        }
        int brojac = 0;
        for(int i = 0; i < v.size(); i++){
            if(v[i] == 0){
                brojac++;
            }
        }
        ans.push_back(brojac);
    }
    for (int i = 0; i < ans.size(); i++){
        cout << ans[i] << endl;
    }
}

Compilation message (stderr)

election.cpp: In function 'int main()':
election.cpp:35:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |         for(int i = 0; i < v.size(); i++){
      |                        ~~^~~~~~~~~~
election.cpp:51:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |         for(int i = 0; i < v.size(); i++){
      |                        ~~^~~~~~~~~~
election.cpp:58:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |     for (int i = 0; i < ans.size(); i++){
      |                     ~~^~~~~~~~~~~~

• Subtask 1: 28 / 28
• Subtask 2: 0 / 54
• Subtask 3: 0 / 18