Submission #901515

#	Time	Username	Problem	Language	Result	Execution time	Memory
901515		Blagoj	JOIOJI (JOI14_joioji)	C++17	100 / 100	48 ms	10216 KiB

joioji

#include <bits/stdc++.h>

using namespace std;

#define endl '\n'
#define ll long long
#define all(x) (x).begin(), (x).end()

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin >> n;
    string s;
    cin >> s;
    map<vector<int>, int> cnt;
    vector<int> occ(3), null = {0, 0, 0};
    cnt[{0, 0, 0}] = -1;
    int ans = 0;
    for (int i = 0; i < n; i++) {
        if (s[i] == 'J') occ[0]++;
        if (s[i] == 'O') occ[1]++;
        if (s[i] == 'I') occ[2]++;
        int mn = occ[0];
        for (int i = 1; i < 3; i++) mn = min(mn, occ[i]);
        for (int i = 0; i < 3; i++) occ[i] -= mn;
        if (cnt[occ] || occ == null) ans = max(ans, i - cnt[occ]);
        else cnt[occ] = i;
    }
    cout << ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 80 / 80