#include <bits/stdc++.h>
using namespace std;
int N, K, A = 1e9, C[5][200005];
char S[200005];
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cin >> N >> K;
for (int i = 1; i <= N; i++) cin >> S[i];
for (int i = N; i >= 1; i--) {
C[1][i] = C[1][i + 1];
C[2][i] = C[2][i + 1];
C[3][i] = C[3][i + 1];
if (S[i] == 'J') C[1][i]++;
else if (S[i] == 'O') C[2][i]++;
else C[3][i]++;
}
for (int i = 1; i <= N; i++) {
int lo = 1, hi = i - K + 1, ans = -1, cans;
while (lo <= hi) {
int mid = (lo + hi) >> 1;
if (C[3][mid] - C[3][i + 1] >= K) ans = mid, lo = mid + 1;
else hi = mid - 1;
}
if (ans == -1) continue;
lo = 1, hi = ans - K + 1, cans = ans, ans = -1;
while (lo <= hi) {
int mid = (lo + hi) >> 1;
if (C[2][mid] - C[2][cans + 1] >= K) ans = mid, lo = mid + 1;
else hi = mid - 1;
}
if (ans == -1) continue;
lo = 1, hi = ans - K + 1, cans = ans, ans = -1;
while (lo <= hi) {
int mid = (lo + hi) >> 1;
if (C[1][mid] - C[1][cans + 1] >= K) ans = mid, lo = mid + 1;
else hi = mid - 1;
}
if (ans == -1) continue;
A = min(A, i - ans + 1);
}
cout << (A == 1e9 ? -1 : A - 3 * K) << '\n';
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
5 ms |
376 KB |
Output is correct |
| 4 |
Correct |
5 ms |
376 KB |
Output is correct |
| 5 |
Correct |
5 ms |
376 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
376 KB |
Output is correct |
| 8 |
Correct |
5 ms |
376 KB |
Output is correct |
| 9 |
Correct |
6 ms |
376 KB |
Output is correct |
| 10 |
Correct |
4 ms |
376 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
5 ms |
376 KB |
Output is correct |
| 4 |
Correct |
5 ms |
376 KB |
Output is correct |
| 5 |
Correct |
5 ms |
376 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
376 KB |
Output is correct |
| 8 |
Correct |
5 ms |
376 KB |
Output is correct |
| 9 |
Correct |
6 ms |
376 KB |
Output is correct |
| 10 |
Correct |
4 ms |
376 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
380 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
5 ms |
376 KB |
Output is correct |
| 19 |
Correct |
5 ms |
376 KB |
Output is correct |
| 20 |
Correct |
5 ms |
376 KB |
Output is correct |
| 21 |
Correct |
5 ms |
376 KB |
Output is correct |
| 22 |
Correct |
5 ms |
376 KB |
Output is correct |
| 23 |
Correct |
5 ms |
376 KB |
Output is correct |
| 24 |
Correct |
5 ms |
380 KB |
Output is correct |
| 25 |
Correct |
5 ms |
376 KB |
Output is correct |
| 26 |
Correct |
5 ms |
376 KB |
Output is correct |
| 27 |
Correct |
5 ms |
376 KB |
Output is correct |
| 28 |
Correct |
5 ms |
376 KB |
Output is correct |
| 29 |
Correct |
5 ms |
376 KB |
Output is correct |
| 30 |
Correct |
5 ms |
376 KB |
Output is correct |
| 31 |
Correct |
5 ms |
376 KB |
Output is correct |
| 32 |
Correct |
5 ms |
376 KB |
Output is correct |
| 33 |
Correct |
5 ms |
376 KB |
Output is correct |
| 34 |
Correct |
5 ms |
376 KB |
Output is correct |
| 35 |
Correct |
5 ms |
376 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
5 ms |
376 KB |
Output is correct |
| 4 |
Correct |
5 ms |
376 KB |
Output is correct |
| 5 |
Correct |
5 ms |
376 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
376 KB |
Output is correct |
| 8 |
Correct |
5 ms |
376 KB |
Output is correct |
| 9 |
Correct |
6 ms |
376 KB |
Output is correct |
| 10 |
Correct |
4 ms |
376 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
380 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
5 ms |
376 KB |
Output is correct |
| 19 |
Correct |
5 ms |
376 KB |
Output is correct |
| 20 |
Correct |
5 ms |
376 KB |
Output is correct |
| 21 |
Correct |
5 ms |
376 KB |
Output is correct |
| 22 |
Correct |
5 ms |
376 KB |
Output is correct |
| 23 |
Correct |
5 ms |
376 KB |
Output is correct |
| 24 |
Correct |
5 ms |
380 KB |
Output is correct |
| 25 |
Correct |
5 ms |
376 KB |
Output is correct |
| 26 |
Correct |
5 ms |
376 KB |
Output is correct |
| 27 |
Correct |
5 ms |
376 KB |
Output is correct |
| 28 |
Correct |
5 ms |
376 KB |
Output is correct |
| 29 |
Correct |
5 ms |
376 KB |
Output is correct |
| 30 |
Correct |
5 ms |
376 KB |
Output is correct |
| 31 |
Correct |
5 ms |
376 KB |
Output is correct |
| 32 |
Correct |
5 ms |
376 KB |
Output is correct |
| 33 |
Correct |
5 ms |
376 KB |
Output is correct |
| 34 |
Correct |
5 ms |
376 KB |
Output is correct |
| 35 |
Correct |
5 ms |
376 KB |
Output is correct |
| 36 |
Correct |
29 ms |
2680 KB |
Output is correct |
| 37 |
Correct |
30 ms |
2936 KB |
Output is correct |
| 38 |
Correct |
31 ms |
2936 KB |
Output is correct |
| 39 |
Correct |
31 ms |
2808 KB |
Output is correct |
| 40 |
Correct |
23 ms |
2936 KB |
Output is correct |
| 41 |
Correct |
29 ms |
2936 KB |
Output is correct |
| 42 |
Correct |
34 ms |
2808 KB |
Output is correct |
| 43 |
Correct |
14 ms |
1912 KB |
Output is correct |
| 44 |
Correct |
17 ms |
2296 KB |
Output is correct |
| 45 |
Correct |
21 ms |
2936 KB |
Output is correct |
| 46 |
Correct |
21 ms |
2936 KB |
Output is correct |
| 47 |
Correct |
20 ms |
2936 KB |
Output is correct |
| 48 |
Correct |
21 ms |
2936 KB |
Output is correct |
| 49 |
Correct |
15 ms |
2040 KB |
Output is correct |
| 50 |
Correct |
21 ms |
2936 KB |
Output is correct |
| 51 |
Correct |
20 ms |
2808 KB |
Output is correct |
| 52 |
Correct |
13 ms |
2808 KB |
Output is correct |
| 53 |
Correct |
13 ms |
2936 KB |
Output is correct |
| 54 |
Correct |
19 ms |
2808 KB |
Output is correct |
| 55 |
Correct |
15 ms |
3064 KB |
Output is correct |
| 56 |
Correct |
11 ms |
2936 KB |
Output is correct |
