#include "bits/stdc++.h"
using namespace std;
#define for_(i, s, e) for (int i = s; i < (int) e; i++)
#define for__(i, s, e) for (ll i = s; i < e; i++)
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
#define endl '\n'
int main() {
#ifdef mlocal
freopen("test.in", "r", stdin);
#endif
ios_base::sync_with_stdio(false);
cin.tie(0);
int n, k; cin >> n >> k;
string s; cin >> s;
vector<vi> pref(n, vi(3));
for_(i, 0, n) {
if (s[i] == 'J') pref[i][0]++;
else if (s[i] == 'O') pref[i][1]++;
else pref[i][2]++;
}
for_(i, 1, n) for_(j, 0, 3) pref[i][j] += pref[i-1][j];
vi pre(n), curr(n);
for_(i, 0, n) pre[i] = i;
for (int j = 2; j >= 0; j--) {
curr.assign(n, n);
int pt = n;
for (int i = n-1; i >= 0; i--) {
while (pt > i and pref[pt-1][j] - (i > 0 ? pref[i-1][j] : 0) >= k) pt--;
curr[i] = pt;
if (pt != n) curr[i] = pre[pt];
}
swap(curr, pre);
}
int ans = n;
for_(i, 0, n) if (pre[i] != n) ans = min(ans, pre[i]-i+1-3*k);
cout << (ans == n ? -1 : ans) << endl;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
320 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 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 |
384 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
320 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 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 |
384 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 |
512 KB |
Output is correct |
| 18 |
Correct |
1 ms |
492 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 |
512 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
492 KB |
Output is correct |
| 25 |
Correct |
1 ms |
492 KB |
Output is correct |
| 26 |
Correct |
1 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 |
1 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 |
1 ms |
492 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
320 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 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 |
384 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 |
512 KB |
Output is correct |
| 18 |
Correct |
1 ms |
492 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 |
512 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
492 KB |
Output is correct |
| 25 |
Correct |
1 ms |
492 KB |
Output is correct |
| 26 |
Correct |
1 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 |
1 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 |
1 ms |
492 KB |
Output is correct |
| 36 |
Correct |
24 ms |
12280 KB |
Output is correct |
| 37 |
Correct |
26 ms |
13304 KB |
Output is correct |
| 38 |
Correct |
26 ms |
13304 KB |
Output is correct |
| 39 |
Correct |
27 ms |
13176 KB |
Output is correct |
| 40 |
Correct |
27 ms |
13304 KB |
Output is correct |
| 41 |
Correct |
27 ms |
13304 KB |
Output is correct |
| 42 |
Correct |
28 ms |
13304 KB |
Output is correct |
| 43 |
Correct |
17 ms |
8428 KB |
Output is correct |
| 44 |
Correct |
20 ms |
10360 KB |
Output is correct |
| 45 |
Correct |
26 ms |
13304 KB |
Output is correct |
| 46 |
Correct |
26 ms |
13304 KB |
Output is correct |
| 47 |
Correct |
26 ms |
13304 KB |
Output is correct |
| 48 |
Correct |
26 ms |
13304 KB |
Output is correct |
| 49 |
Correct |
18 ms |
8952 KB |
Output is correct |
| 50 |
Correct |
26 ms |
13304 KB |
Output is correct |
| 51 |
Correct |
26 ms |
13304 KB |
Output is correct |
| 52 |
Correct |
22 ms |
12792 KB |
Output is correct |
| 53 |
Correct |
23 ms |
13304 KB |
Output is correct |
| 54 |
Correct |
23 ms |
13304 KB |
Output is correct |
| 55 |
Correct |
22 ms |
13304 KB |
Output is correct |
| 56 |
Correct |
22 ms |
13304 KB |
Output is correct |
