#include <bits/stdc++.h>
using namespace std;
int N, K, nextJ[200005], nextO[200005], nextI[200005];
vector<int> posJ, posO, posI;
char x[200005];
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> N >> K;
for (int i = 1; i <= N; ++i){
cin >> x[i];
if (x[i] == 'J') posJ.push_back(i);
if (x[i] == 'O') posO.push_back(i);
if (x[i] == 'I') posI.push_back(i);
}
int lastJ = N+1, lastO = N+1, lastI = N+1;
for (int i = N; i >= 1; --i){
nextJ[i] = lastJ;
nextO[i] = lastO;
nextI[i] = lastI;
if (x[i] == 'J') lastJ = i;
if (x[i] == 'O') lastO = i;
if (x[i] == 'I') lastI = i;
}
int mini = 1e9;
for (int i = 0; i < posJ.size() - K + 1; ++i){
int lJ = posJ[i], rJ = posJ[i+K-1];
int lO = nextO[rJ];
auto itO = lower_bound(posO.begin(),posO.end(),lO);
if (itO - posO.begin() > posO.size() - K) break;
int rO = *(itO + K - 1);
int lI = nextI[rO];
auto itI = lower_bound(posI.begin(),posI.end(),lI);
if (itI - posI.begin() > posI.size() - K) break;
int rI = *(itI + K - 1);
mini = min(mini,rI - lJ + 1 - 3 * K);
}
if (mini == 1e9){
cout << -1 << '\n';
}
else cout << mini << '\n';
}
Compilation message
ho_t2.cpp: In function 'int main()':
ho_t2.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < posJ.size() - K + 1; ++i){
~~^~~~~~~~~~~~~~~~~~~~~
ho_t2.cpp:33:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (itO - posO.begin() > posO.size() - K) break;
~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
ho_t2.cpp:37:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (itI - posI.begin() > posI.size() - K) break;
~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
380 KB |
Output is correct |
| 3 |
Correct |
4 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 |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
376 KB |
Output is correct |
| 11 |
Correct |
4 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
4 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
380 KB |
Output is correct |
| 3 |
Correct |
4 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 |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
376 KB |
Output is correct |
| 11 |
Correct |
4 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
4 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
248 KB |
Output is correct |
| 16 |
Correct |
5 ms |
376 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 |
380 KB |
Output is correct |
| 21 |
Correct |
5 ms |
508 KB |
Output is correct |
| 22 |
Correct |
5 ms |
380 KB |
Output is correct |
| 23 |
Correct |
5 ms |
376 KB |
Output is correct |
| 24 |
Correct |
5 ms |
376 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 |
380 KB |
Output is correct |
| 34 |
Correct |
5 ms |
376 KB |
Output is correct |
| 35 |
Correct |
5 ms |
376 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
380 KB |
Output is correct |
| 3 |
Correct |
4 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 |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
376 KB |
Output is correct |
| 11 |
Correct |
4 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
4 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
248 KB |
Output is correct |
| 16 |
Correct |
5 ms |
376 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 |
380 KB |
Output is correct |
| 21 |
Correct |
5 ms |
508 KB |
Output is correct |
| 22 |
Correct |
5 ms |
380 KB |
Output is correct |
| 23 |
Correct |
5 ms |
376 KB |
Output is correct |
| 24 |
Correct |
5 ms |
376 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 |
380 KB |
Output is correct |
| 34 |
Correct |
5 ms |
376 KB |
Output is correct |
| 35 |
Correct |
5 ms |
376 KB |
Output is correct |
| 36 |
Correct |
21 ms |
3568 KB |
Output is correct |
| 37 |
Correct |
21 ms |
3816 KB |
Output is correct |
| 38 |
Correct |
21 ms |
3924 KB |
Output is correct |
| 39 |
Correct |
20 ms |
3944 KB |
Output is correct |
| 40 |
Correct |
16 ms |
3908 KB |
Output is correct |
| 41 |
Correct |
18 ms |
3924 KB |
Output is correct |
| 42 |
Correct |
21 ms |
3816 KB |
Output is correct |
| 43 |
Correct |
11 ms |
2800 KB |
Output is correct |
| 44 |
Correct |
12 ms |
3168 KB |
Output is correct |
| 45 |
Correct |
14 ms |
3812 KB |
Output is correct |
| 46 |
Correct |
14 ms |
3812 KB |
Output is correct |
| 47 |
Correct |
14 ms |
3940 KB |
Output is correct |
| 48 |
Correct |
14 ms |
3940 KB |
Output is correct |
| 49 |
Correct |
12 ms |
2800 KB |
Output is correct |
| 50 |
Correct |
14 ms |
3812 KB |
Output is correct |
| 51 |
Correct |
14 ms |
3940 KB |
Output is correct |
| 52 |
Correct |
13 ms |
3756 KB |
Output is correct |
| 53 |
Correct |
14 ms |
3944 KB |
Output is correct |
| 54 |
Correct |
12 ms |
3816 KB |
Output is correct |
| 55 |
Correct |
11 ms |
3828 KB |
Output is correct |
| 56 |
Correct |
10 ms |
3828 KB |
Output is correct |
