#include <bits/stdc++.h>
using namespace std;

int main() {
size_t t,n,m,k;cin>>t;
string a;
while(t--){
    cin>>n>>m>>k>>a;
    if(m>n){ cout<<"YESn";
        continue;}
    for(size_t i=0;i<n;){
                    if(i=a.find("L",i))!=string::npos){
           if(m+k>=a.find("L",i)){
            if(n-i<=m+k) {cout<<"YESn";
            break;}
           }
           else{
            cout<<"NOn";
            break;}
    }}
}
return 0;
}

so basically i have to cross a river of length n , with C (crocodiles) ,L(logs) in it
but upon running it with the input
6 2 0
LWLLLW
6 1 1
LWLLLL
6 1 1
LWLLWL
6 2 15
LWLLCC
6 10 0
CCCCCC
6 6 1
WCCCCW

i am getting the error mentioned in the title.

tell me what is triggering that error