oj.uz

Submission #771389

# Submission time Handle Problem Language Result Execution time Memory
771389 2023-07-02T23:31:36 Z gggkik None (JOI16_ho_t2) C++14
0 / 100
 1 ms 340 KB 
#include <bits/stdc++.h>
using namespace std;
const int MXN = 1e5+5;
int J[2][MXN], O[2][MXN], I[2][MXN], n;
char A[MXN];
int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n;
    for(int i = 1;i<=n;i++) cin >> A[i];
    for(int i = n;i;i--){
        I[1][i] = I[1][i+1];
        O[1][i] = O[1][i+1];
        J[1][i] = J[1][i+1];
        if(A[i]=='I') I[1][i]++;
        if(A[i]=='O') O[1][i]+=I[1][i];
        if(A[i]=='J') J[1][i]+=O[1][i];
    }
    long long ans = 0;
    for(int i = 1;i<=n;i++){
        J[0][i] = J[0][i-1];
        O[0][i] = O[0][i-1];
        I[0][i] = I[0][i-1];
        if(A[i]=='J') J[0][i]++;
        if(A[i]=='O') O[0][i]+=J[0][i];
        if(A[i]=='I') I[0][i]+=O[0][i];
        ans = max({ans,
            1LL*(J[0][i]+1)*O[1][i],
            1LL*(O[0][i]+J[0][i])*I[1][i],
            1LL*(I[0][i]+O[0][i])
        });
    }
    cout << ans;
}

Subtask #1
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Incorrect 0 ms 340 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Incorrect 0 ms 340 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Incorrect 0 ms 340 KB Output isn't correct
8 Halted 0 ms 0 KB -