제출 #1311583

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1311583		dm2010	Election (BOI18_election)	C++20	0 / 100	3 ms	332 KiB

election

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

int solve_forward(const string &s) {
    int balance = 0;
    int removed = 0;

    for (char c : s) {
        if (c == 'C') balance++;
        else balance--;

        if (balance < 0) {
            removed++;
            balance++;
        }
    }
    return removed;
}

int solve_backward(const string &s) {
    int balance = 0;
    int removed = 0;

    for (int i = (int)s.size() - 1; i >= 0; i--) {
        if (s[i] == 'C') balance++;
        else balance--;

        if (balance < 0) {
            removed++;
            balance++;
        }
    }
    return removed;
}

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

    int N;
    cin >> N;

    string S;
    cin >> S;

    int Q;
    cin >> Q;

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

        string sub = S.substr(L, R - L + 1);

        int fwd = solve_forward(sub);
        int bwd = solve_backward(sub);

        cout << max(fwd, bwd) << "\n";
    }

    return 0;
}

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