题解

#include <iostream>
#include <cstdio>
using namespace std;
int main(){
int n, m, ct = 0, ctt = 0;
bool flag = 0;
cin >> n >> m;
string a;
cin >> a;
for(int i = 0; i < n; i++){
if(a[i] == 'O') flag = 1;
if(flag) ctt++;
if(ctt == m){
ctt = 0;
ct++;
flag = 0;
}
//a[i] = 'N';
}if(ctt){
ctt = 0;
ct++;
flag = 0;
}
cout << ct;

return 0;

}