Submission #82374

#	Time	Username	Problem	Language	Result	Execution time	Memory
82374		faceless	Election (BOI18_election)	C++14	28 / 100	3042 ms	1872 KiB

election

#include <bits/stdc++.h>
#define F first
#define S second
#define PB push_back
#define PF push_front
#define MP make_pair
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
const int maxn = 1e5 + 10;
const int mod = 1e9 + 7;

bool mark[maxn];

int main () {
	int n, q;
	string s;
	cin >> n >> s >> q;
	for (int i = 0; i < q; i++) {
		memset (mark, 0, sizeof mark);
		int l, r;
		cin >> l >> r;
		l --, r --;
		
		int cnt = 0, ans = 0;
		for (int j = l; j <= r; j++) {
			if (s[j] == 'T' and cnt == 0) {
				mark[j] = 1;
				ans ++;
			}
			else if (s[j] == 'T')
				cnt --;
			else
				cnt ++;
		}
		cnt = 0;
		for (int j = r; j >= l; j--) {
			if (mark[j])
				continue;
			if (s[j] == 'T' and cnt == 0) {
				mark[j] = 1;
				ans ++;
			}
			else if (s[j] == 'T')
				cnt --;
			else
				cnt ++;
		}
		cout << ans << endl;
	}
}

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