Submission #67949

#	Time	Username	Problem	Language	Result	Execution time	Memory
67949		aome	Election (BOI18_election)	C++17	28 / 100	12 ms	720 KiB

election

#include <bits/stdc++.h>

using namespace std;

const int N = 2005;

int n, m;
string s;
bool del[N];

int main() {
	ios::sync_with_stdio(false);
	cin >> n >> s, s = ' ' + s;
	if (n >= N) return 0;
	cin >> m;
	while (m--) {
		int l, r; cin >> l >> r;
		int cnt = 0, sum = 0;
		for (int i = l; i <= r; ++i) {
			sum += (s[i] == 'T' ? -1 : 1);
			if (sum < 0) sum++, cnt++, del[i] = 1;
		}
		sum = 0;
		for (int i = r; i >= l; --i) {
			if (del[i]) continue;
			sum += (s[i] == 'T' ? -1 : 1);
			if (sum < 0) sum++, cnt++, del[i] = 1;
		}
		cout << cnt << '\n';
		for (int i = l; i <= r; ++i) del[i] = 0;
	}
}

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