Submission #1311582

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311582		dm2010	Election (BOI18_election)	C++20	0 / 100	0 ms	332 KiB

election

#include <bits/stdc++.h>
using namespace std;

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

    int N, Q;
    cin >> N >> Q;

    string s;
    cin >> s;

    while (Q--) {
        int L, R;
        cin >> L >> R;
        L--; R--;

        int balance = 0;
        int removeForward = 0;

        for (int i = L; i <= R; i++) {
            if (s[i] == 'C') balance++;
            else balance--;

            if (balance < 0) {
                removeForward++;
                balance++; 
            }
        }
        balance = 0;
        int removeBackward = 0;

        for (int i = R; i >= L; i--) {
            if (s[i] == 'C') balance++;
            else balance--;

            if (balance < 0) {
                removeBackward++;
                balance++;
            }
        }

        cout << max(removeForward, removeBackward) << "\n";
    }

    return 0;
}

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