Submission #237601

#	Time	Username	Problem	Language	Result	Execution time	Memory
237601		Sorting	Election (BOI18_election)	C++14	28 / 100	3086 ms	1912 KiB

election

#include <bits/stdc++.h>

using namespace std;

const int mx_N = 5e5 + 3;

int n, q;
string s;

int a[mx_N];

int main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n >> s;

    for(int i = 0; i < n; ++i)
        a[i + 1] = (s[i] == 'C') ? 1 : -1;

    cin >> q;
    for(int i = 0; i < q; ++i){
        int lq, rq;
        cin >> lq >> rq;

        int sum = 0, l = 0, r = 0;
        for(int i = lq; i <= rq; ++i){
            if(a[i] == 1){
                r -= (bool)r;
                sum++;
            }
            else if(a[i] == -1){
                if(sum){
                    sum--;
                    r++;
                }
                else
                    l++;
            } 
        }

        cout << l + r << "\n";
    }
}

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