Submission #1087282

#	Time	Username	Problem	Language	Result	Execution time	Memory
1087282		jonghak9028	Toilets (JOI16_toilets)	C++17	0 / 100	3 ms	6492 KiB

toilets

/* ************************************************************************** */
/*                                                                            */
/*                                                      :::    :::    :::     */
/*   Problem Number: 17709                             :+:    :+:      :+:    */
/*                                                    +:+    +:+        +:+   */
/*   By: js9028 <boj.kr/u/js9028>                    +#+    +#+          +#+  */
/*                                                  +#+      +#+        +#+   */
/*   https://boj.kr/17709                          #+#        #+#      #+#    */
/*   Solved: 2024/09/12 19:48:56 by js9028        ###          ###   ##.kr    */
/*                                                                            */
/* ************************************************************************** */
#include <bits/stdc++.h>
using namespace std;
#define fastio (ios_base::sync_with_stdio(false), cin.tie(NULL), cout.tie(NULL))
typedef long long ll;
typedef long double lld;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
const int MAXSIZE = 2000000;
const long long INF = 1e18 + 5;
const double EPSILON = 1e-14;
const ll DIV = 2000003;
const long double pi = 3.14159265358979323846264338327950288419716939937510L;

ll n, m;
string s[200055];
ll cnt[200055];

int main()
{
    fastio;
    cin >> n >> m;
    for (int i = 0; i < m; i++)
    {
        cin >> s[i];
        cin >> cnt[i];
    }
    ll glt = 0;
    ll mxt = 0;
    for (int i = m - 1; i >= 0; i--)
    {
        string &cs = s[i];

        ll nt = 0;
        ll mm = 0;

        for (int j = cs.size() - 1; j >= 0; j--)
        {
            nt += (cs[j] == 'M' ? -1 : 1);
            mxt = min(mxt, nt + glt);

            mm = min(mm, nt);
        }
        nt = 0;
        mm = 0;
        glt += nt * (cnt[i] - 1);

        for (int j = cs.size() - 1; j >= 0; j--)
        {
            nt += (cs[j] == 'M' ? -1 : 1);
            mxt = min(mxt, nt + glt);

            mm = min(mm, nt);
        }
        mxt = min(mxt, glt + (cnt[i] - 1) * nt + mm);
        glt += nt;
        mxt = min(mxt, glt);
    }
    if (glt < 0)
    {
        cout << -1;
    }

    else
    {
        cout << -mxt - 1;
    }

    return 0;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 22
• Subtask 3: 0 / 64