#define _USE_MATH_DEFINES
#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
#include<random>
#include<bitset>
#include<cassert>
using namespace std;
typedef long long ll;
const int mod=998244353;
const int dx[]={1,0,0,-1},dy[]={0,1,-1,0};
int main(){
int n;
string s;
cin>>n>>s;
map<pair<int,int>,vector<int>>mp;
int x=0,y=0;
mp[{x,y}].push_back(0);
for(int i=0;i<n;i++){
if(s[i]=='J')
x++;
if(s[i]=='O')
y++;
if(s[i]=='I')
x--,y--;
mp[{x,y}].push_back(i+1);
}
int ans=0;
for(auto&e:mp)
if(e.second.size()>=2)
ans=max(ans,e.second.back()-e.second[0]);
cout<<ans<<endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
304 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
212 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
304 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
300 KB |
Output is correct |
3 |
Correct |
1 ms |
428 KB |
Output is correct |
4 |
Correct |
2 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
468 KB |
Output is correct |
9 |
Correct |
1 ms |
468 KB |
Output is correct |
10 |
Correct |
1 ms |
468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
596 KB |
Output is correct |
2 |
Correct |
6 ms |
1364 KB |
Output is correct |
3 |
Correct |
11 ms |
2260 KB |
Output is correct |
4 |
Correct |
23 ms |
3796 KB |
Output is correct |
5 |
Correct |
32 ms |
5848 KB |
Output is correct |
6 |
Correct |
37 ms |
6236 KB |
Output is correct |
7 |
Correct |
38 ms |
6968 KB |
Output is correct |
8 |
Correct |
34 ms |
5980 KB |
Output is correct |
9 |
Correct |
35 ms |
6524 KB |
Output is correct |
10 |
Correct |
39 ms |
6100 KB |
Output is correct |
11 |
Correct |
37 ms |
8668 KB |
Output is correct |
12 |
Correct |
25 ms |
4140 KB |
Output is correct |
13 |
Correct |
22 ms |
3112 KB |
Output is correct |
14 |
Correct |
39 ms |
10428 KB |
Output is correct |
15 |
Correct |
17 ms |
2632 KB |
Output is correct |