#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll a,b,c,d,i,e,f,g,n,m,k,l,minn,j;
ll A[500005],Ain[500005],L[500005],R[500005];
queue <ll> q;
string s;
int main() {
cin>>n>>k>>s;
for(ll i=0;i<s.size();i++) {
if(s[i]=='O') {
a++;
A[a]=i;
Ain[i]=a;
}
}
for(ll i=0;i<s.size();i++) {
if(s[i]=='J') {
q.push(i);
if(q.size()>k) q.pop();
}
if(s[i]=='O') {
if(q.size()==k) L[i]=q.front();
else L[i]=-1;
}
}
while(!q.empty()) q.pop();
for(ll i=s.size()-1;i>=0;i--) {
if(s[i]=='I') {
q.push(i);
if(q.size()>k) q.pop();
}
if(s[i]=='O') {
if(q.size()==k) R[i]=q.front();
else R[i]=-1;
}
}
minn=1e18;
for(ll i=0;i<s.size();i++) {
if(s[i]=='O') {
j=A[Ain[i]+1];
if(Ain[i]==a) continue;
//cout<<i<<" "<<j<<" "<<L[i]<<" "<<R[j]<<endl;
if(L[i]==-1 || R[j]==-1) continue;
minn=min(minn,R[j]-L[i]+1-k*3);
}
}
if(minn==1e18) cout<<-1;
else cout<<minn;
}
Compilation message
ho_t2.cpp: In function 'int main()':
ho_t2.cpp:10:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
10 | for(ll i=0;i<s.size();i++) {
| ~^~~~~~~~~
ho_t2.cpp:17:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
17 | for(ll i=0;i<s.size();i++) {
| ~^~~~~~~~~
ho_t2.cpp:20:24: warning: comparison of integer expressions of different signedness: 'std::queue<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
20 | if(q.size()>k) q.pop();
| ~~~~~~~~^~
ho_t2.cpp:23:24: warning: comparison of integer expressions of different signedness: 'std::queue<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
23 | if(q.size()==k) L[i]=q.front();
| ~~~~~~~~^~~
ho_t2.cpp:31:24: warning: comparison of integer expressions of different signedness: 'std::queue<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
31 | if(q.size()>k) q.pop();
| ~~~~~~~~^~
ho_t2.cpp:34:24: warning: comparison of integer expressions of different signedness: 'std::queue<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
34 | if(q.size()==k) R[i]=q.front();
| ~~~~~~~~^~~
ho_t2.cpp:39:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
39 | for(ll i=0;i<s.size();i++) {
| ~^~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
