#include <bits/stdc++.h>
using namespace std;
const int MXN = 1e5+5;
long long 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 = 0;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,J[1][1]+max({
O[1][i+1],
1LL*J[0][i]*I[1][i+1],
O[0][i],
}));
}
cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
1 ms |
336 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
0 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
300 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
1 ms |
336 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
0 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
300 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
460 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
1 ms |
468 KB |
Output is correct |
| 19 |
Correct |
1 ms |
468 KB |
Output is correct |
| 20 |
Correct |
1 ms |
468 KB |
Output is correct |
| 21 |
Correct |
1 ms |
468 KB |
Output is correct |
| 22 |
Correct |
1 ms |
468 KB |
Output is correct |
| 23 |
Correct |
1 ms |
468 KB |
Output is correct |
| 24 |
Correct |
1 ms |
468 KB |
Output is correct |
| 25 |
Correct |
1 ms |
468 KB |
Output is correct |
| 26 |
Correct |
1 ms |
460 KB |
Output is correct |
| 27 |
Correct |
1 ms |
456 KB |
Output is correct |
| 28 |
Correct |
1 ms |
468 KB |
Output is correct |
| 29 |
Correct |
1 ms |
468 KB |
Output is correct |
| 30 |
Correct |
1 ms |
460 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
1 ms |
336 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
0 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
300 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
460 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
1 ms |
468 KB |
Output is correct |
| 19 |
Correct |
1 ms |
468 KB |
Output is correct |
| 20 |
Correct |
1 ms |
468 KB |
Output is correct |
| 21 |
Correct |
1 ms |
468 KB |
Output is correct |
| 22 |
Correct |
1 ms |
468 KB |
Output is correct |
| 23 |
Correct |
1 ms |
468 KB |
Output is correct |
| 24 |
Correct |
1 ms |
468 KB |
Output is correct |
| 25 |
Correct |
1 ms |
468 KB |
Output is correct |
| 26 |
Correct |
1 ms |
460 KB |
Output is correct |
| 27 |
Correct |
1 ms |
456 KB |
Output is correct |
| 28 |
Correct |
1 ms |
468 KB |
Output is correct |
| 29 |
Correct |
1 ms |
468 KB |
Output is correct |
| 30 |
Correct |
1 ms |
460 KB |
Output is correct |
| 31 |
Correct |
3 ms |
5180 KB |
Output is correct |
| 32 |
Correct |
4 ms |
5204 KB |
Output is correct |
| 33 |
Correct |
3 ms |
5204 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5204 KB |
Output is correct |
| 35 |
Correct |
3 ms |
5176 KB |
Output is correct |
| 36 |
Correct |
4 ms |
5204 KB |
Output is correct |
| 37 |
Correct |
4 ms |
5108 KB |
Output is correct |
| 38 |
Correct |
4 ms |
5204 KB |
Output is correct |
| 39 |
Correct |
4 ms |
5164 KB |
Output is correct |
| 40 |
Correct |
6 ms |
5332 KB |
Output is correct |
| 41 |
Correct |
4 ms |
5176 KB |
Output is correct |
| 42 |
Correct |
4 ms |
5204 KB |
Output is correct |
| 43 |
Correct |
4 ms |
5160 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5204 KB |
Output is correct |
| 45 |
Correct |
3 ms |
5204 KB |
Output is correct |
