func_code_string: #include <bits/stdc++.h>   using namespace std;      #define rep(i, a) for(int i=0;i<a;i++)   #define repA(i,a,b)for(int i=a;i<b;i++)   #define l list   #define v vector   #define u_m unordered_map   typedef long long ll;   const int mxN=101,MOD=1e9+7;   void solve(){    int n,m,count=1,r=0;    cin>>n>>m;    string s;    cin>>s;    while(count>0&&r<m){     string cop=s;     count=0;     rep(i,n){      if(s[i]== 0 ){      int cr=0;      if(i-1>=0&&s[i-1]== 1 )cr++;      if(i+1<n&&s[i+1]== 1 )cr++;      if(cr==1){       cop[i]= 1 ;       count++;      }      }     }     s=cop;     r++;    }    cout<<s<<endl;   }   int main(){    ios::sync_with_stdio(0);       cin.tie(0);       cout.tie(0);    int t;    cin>>t;    while(t--){     solve();    }   }   