#include <bits/stdc++.h>
using namespace std;
#define int long long
#define sp << " " <<
#define nl << "\n"
int dp[2][1<<18], pos[3][1<<18];
int n, k;
string s;
void calc(int x, char C){
int cnt = 0;
pos[x][0] = -1;
for(int i=0; i+1<n; ++i){
if(s[i]==C) pos[x][++cnt] = i;
if(cnt>=k) dp[x][i] = i-pos[x][cnt-k+1]+1-k;
else dp[x][i] = n+n;
}
}
signed main(){
cin.tie(0)->sync_with_stdio(0);
cin >> n >> k >> s;
calc(0, 'J');
reverse(s.begin(), s.end());
calc(1, 'I');
int ans = n+n, cnt = 0;
for(int i=0; i<n; ++i){
if(s[i]=='O') pos[2][++cnt] = i;
if(cnt>=k){
int a = pos[2][cnt-k+1] ? dp[1][pos[2][cnt-k+1]-1] : n+n;
int b = i+1<n ? dp[0][n-2-i] : n+n;
ans = min(ans, a + b + i-pos[2][cnt-k+1]+1-k);
}
}
if(ans>=n) ans = -1;
cout << ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
492 KB |
Output is correct |
| 16 |
Correct |
1 ms |
492 KB |
Output is correct |
| 17 |
Correct |
1 ms |
492 KB |
Output is correct |
| 18 |
Correct |
2 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
492 KB |
Output is correct |
| 20 |
Correct |
1 ms |
492 KB |
Output is correct |
| 21 |
Correct |
1 ms |
492 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
492 KB |
Output is correct |
| 25 |
Correct |
2 ms |
492 KB |
Output is correct |
| 26 |
Correct |
2 ms |
492 KB |
Output is correct |
| 27 |
Correct |
1 ms |
492 KB |
Output is correct |
| 28 |
Correct |
1 ms |
492 KB |
Output is correct |
| 29 |
Correct |
2 ms |
492 KB |
Output is correct |
| 30 |
Correct |
1 ms |
492 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
492 KB |
Output is correct |
| 34 |
Correct |
1 ms |
492 KB |
Output is correct |
| 35 |
Correct |
2 ms |
492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
492 KB |
Output is correct |
| 16 |
Correct |
1 ms |
492 KB |
Output is correct |
| 17 |
Correct |
1 ms |
492 KB |
Output is correct |
| 18 |
Correct |
2 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
492 KB |
Output is correct |
| 20 |
Correct |
1 ms |
492 KB |
Output is correct |
| 21 |
Correct |
1 ms |
492 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
492 KB |
Output is correct |
| 25 |
Correct |
2 ms |
492 KB |
Output is correct |
| 26 |
Correct |
2 ms |
492 KB |
Output is correct |
| 27 |
Correct |
1 ms |
492 KB |
Output is correct |
| 28 |
Correct |
1 ms |
492 KB |
Output is correct |
| 29 |
Correct |
2 ms |
492 KB |
Output is correct |
| 30 |
Correct |
1 ms |
492 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
492 KB |
Output is correct |
| 34 |
Correct |
1 ms |
492 KB |
Output is correct |
| 35 |
Correct |
2 ms |
492 KB |
Output is correct |
| 36 |
Correct |
7 ms |
5260 KB |
Output is correct |
| 37 |
Correct |
7 ms |
5624 KB |
Output is correct |
| 38 |
Correct |
8 ms |
5624 KB |
Output is correct |
| 39 |
Correct |
7 ms |
5496 KB |
Output is correct |
| 40 |
Correct |
8 ms |
5624 KB |
Output is correct |
| 41 |
Correct |
8 ms |
5624 KB |
Output is correct |
| 42 |
Correct |
7 ms |
5624 KB |
Output is correct |
| 43 |
Correct |
5 ms |
3692 KB |
Output is correct |
| 44 |
Correct |
6 ms |
4472 KB |
Output is correct |
| 45 |
Correct |
9 ms |
5624 KB |
Output is correct |
| 46 |
Correct |
7 ms |
5624 KB |
Output is correct |
| 47 |
Correct |
7 ms |
5624 KB |
Output is correct |
| 48 |
Correct |
7 ms |
5624 KB |
Output is correct |
| 49 |
Correct |
5 ms |
3832 KB |
Output is correct |
| 50 |
Correct |
9 ms |
5624 KB |
Output is correct |
| 51 |
Correct |
7 ms |
5624 KB |
Output is correct |
| 52 |
Correct |
9 ms |
5368 KB |
Output is correct |
| 53 |
Correct |
7 ms |
5624 KB |
Output is correct |
| 54 |
Correct |
6 ms |
5624 KB |
Output is correct |
| 55 |
Correct |
5 ms |
5624 KB |
Output is correct |
| 56 |
Correct |
7 ms |
5624 KB |
Output is correct |
