Submission #157043

#	Time	Username	Problem	Language	Result	Execution time	Memory
157043		maruii	Toilets (JOI16_toilets)	C++14	100 / 100	30 ms	1912 KiB

toilets

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

char S[200005];

int main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	long long N; int M; cin >> N >> M;
	long long y = 0, mny = 0;
	for (int i = 0; i < M; ++i) {
		long long K, sum = 0, mnSum = 0;
		cin >> S + 1 >> K;
		for (int i = 1, t = 0; S[i]; ++i) {
			t++;
			if (S[i] != S[i + 1]) {
				sum += S[i] == 'M' ? t : -t;
				mnSum = min(mnSum, sum);
				t = 0;
			}
		}
		mny = min({mny, y + sum * (K - 1) + mnSum, y + mnSum});
		y += K * sum;
	}
	if (y > 0) printf("-1");
	else printf("%lld", max(0ll, y -mny - 1));
	return 0;
}

Compilation message (stderr)

toilets.cpp: In function 'int main()':
toilets.cpp:12:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   cin >> S + 1 >> K;
          ~~^~~

• Subtask 1: 14 / 14
• Subtask 2: 22 / 22
• Subtask 3: 64 / 64