#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
ll pre[100005][3];
ll suf[100005][3];
int main(){
ios_base::sync_with_stdio(false), cin.tie(0);
cout.precision(10);
cout << fixed;
int n;
cin >> n;
string s;
cin >> s;
for(int i=1; i<=n; i++){
pre[i][0] = pre[i-1][0];
pre[i][1] = pre[i-1][1];
pre[i][2] = pre[i-1][2];
if(s[i-1] == 'J'){
pre[i][0]++;
}
else if(s[i-1] == 'O'){
pre[i][1] += pre[i][0];
}
else{
pre[i][2] += pre[i][1];
}
}
for(int i=n; i>=1; i--){
suf[i][0] = suf[i+1][0];
suf[i][1] = suf[i+1][1];
suf[i][2] = suf[i+1][2];
if(s[i-1] == 'I'){
suf[i][0]++;
}
else if(s[i-1] == 'O'){
suf[i][1] += suf[i][0];
}
else{
suf[i][2] += suf[i][1];
}
}
ll res = 0;
for(int i=0; i<=n; i++){
res = max(res, suf[i+1][1]);
res = max(res, pre[i][1]);
res = max(res, pre[i][0]*suf[i+1][0]);
}
cout << res + pre[n][2] << "\n";
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
0 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
320 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
0 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
320 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
460 KB |
Output is correct |
| 17 |
Correct |
1 ms |
460 KB |
Output is correct |
| 18 |
Correct |
1 ms |
460 KB |
Output is correct |
| 19 |
Correct |
1 ms |
460 KB |
Output is correct |
| 20 |
Correct |
1 ms |
460 KB |
Output is correct |
| 21 |
Correct |
1 ms |
460 KB |
Output is correct |
| 22 |
Correct |
1 ms |
460 KB |
Output is correct |
| 23 |
Correct |
1 ms |
460 KB |
Output is correct |
| 24 |
Correct |
1 ms |
460 KB |
Output is correct |
| 25 |
Correct |
1 ms |
460 KB |
Output is correct |
| 26 |
Correct |
1 ms |
460 KB |
Output is correct |
| 27 |
Correct |
1 ms |
460 KB |
Output is correct |
| 28 |
Correct |
1 ms |
460 KB |
Output is correct |
| 29 |
Correct |
1 ms |
460 KB |
Output is correct |
| 30 |
Correct |
1 ms |
460 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
0 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
320 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
460 KB |
Output is correct |
| 17 |
Correct |
1 ms |
460 KB |
Output is correct |
| 18 |
Correct |
1 ms |
460 KB |
Output is correct |
| 19 |
Correct |
1 ms |
460 KB |
Output is correct |
| 20 |
Correct |
1 ms |
460 KB |
Output is correct |
| 21 |
Correct |
1 ms |
460 KB |
Output is correct |
| 22 |
Correct |
1 ms |
460 KB |
Output is correct |
| 23 |
Correct |
1 ms |
460 KB |
Output is correct |
| 24 |
Correct |
1 ms |
460 KB |
Output is correct |
| 25 |
Correct |
1 ms |
460 KB |
Output is correct |
| 26 |
Correct |
1 ms |
460 KB |
Output is correct |
| 27 |
Correct |
1 ms |
460 KB |
Output is correct |
| 28 |
Correct |
1 ms |
460 KB |
Output is correct |
| 29 |
Correct |
1 ms |
460 KB |
Output is correct |
| 30 |
Correct |
1 ms |
460 KB |
Output is correct |
| 31 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 32 |
Correct |
4 ms |
5324 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5232 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5232 KB |
Output is correct |
| 35 |
Correct |
4 ms |
5320 KB |
Output is correct |
| 36 |
Correct |
5 ms |
5232 KB |
Output is correct |
| 37 |
Correct |
5 ms |
5196 KB |
Output is correct |
| 38 |
Correct |
5 ms |
5292 KB |
Output is correct |
| 39 |
Correct |
5 ms |
5196 KB |
Output is correct |
| 40 |
Correct |
5 ms |
5232 KB |
Output is correct |
| 41 |
Correct |
5 ms |
5288 KB |
Output is correct |
| 42 |
Correct |
4 ms |
5232 KB |
Output is correct |
| 43 |
Correct |
5 ms |
5232 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 45 |
Correct |
4 ms |
5196 KB |
Output is correct |
