#include <bits/stdc++.h>
#define x first
#define y second
#define pii pair<ll, ll>
typedef long long ll;
const ll MOD = 1000000007LL;
const ll INF = 1e15;
using namespace std;
ll n, k, cnt, pos[5], tmp1, tmp2;
char a[200010];
int main() {
cin.tie(0); cout.tie(0);
ios::sync_with_stdio(0);
cin >> n >> k;
for (int i = 1; i <= n; i++) cin >> a[i];
pos[1] = n+1;
pos[3] = 0;
cnt = 0;
for (int i = 1; i <= n; i++) {
cnt += (a[i] == 'J');
if (cnt == k) {
pos[1] = i;
break;
}
}
cnt = 0;
for (int i = n; i >= 1; i--) {
cnt += (a[i] == 'I');
if (cnt == k) {
pos[3] = i;
break;
}
}
cnt = 0;
for (int i = pos[1]+1; i <= pos[3]-1; i++) {
cnt += (a[i] == 'O');
}
tmp1 = 0;
while (tmp1 < n && a[tmp1+1] != 'J') tmp1++;
tmp2 = n+1;
while (tmp2 > 1 && a[tmp2-1] != 'I') tmp2--;
if (cnt >= k) {
cout << tmp1+n-tmp2+1 << "\n";
}
else cout << "-1\n";
return 0;
}
/*
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |