Submission #1102032

#	Time	Username	Problem	Language	Result	Execution time	Memory
1102032		woohyun_jng	Toilets (JOI16_toilets)	C++17	100 / 100	17 ms	8520 KiB

toilets

#include <bits/stdc++.h>
#define int long long

using namespace std;

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);

    int N, M, K, sm = 0, cur = 0, mn = 0, smn;
    vector<pair<string, int>> inp;
    string S;

    cin >> N >> M;
    while (M--) {
        cin >> S >> K;
        inp.push_back({S, K});
    }

    reverse(inp.begin(), inp.end());
    for (pair<string, int> i : inp) {
        S = i.first, K = i.second, cur = 0, smn = 0;

        for (int i = S.size() - 1; i >= 0; i--) {
            cur += (S[i] == 'F' ? 1 : -1);
            smn = min(smn, cur);
        }

        mn = min({mn, sm + smn, sm + cur * (K - 1) + smn});
        sm += cur * K;
    }

    if (sm < 0) cout << -1;
    else cout << max(0ll, -mn - 1);
}

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