func_code_string: #include<bits/stdc++.h>   using namespace std;   int main()   {          int n,i,j,cnt,ara2[20000],m;       string ss;       cin>>m;       for(i=0;i<m;i++)       {       cin>>n;       cin>>ss;          if((ss[0]== 2 )&&(ss[n-1]== 0 )&&(ss[n-2]== 2 )&&(ss[n-3]== 0 ))       {           cout<< Yes <<endl;       }       else if((ss[0]== 2 )&&(ss[n-1]== 0 )&&(ss[n-2]== 2 )&&(ss[1]== 0 ))       {           cout<< Yes <<endl;       }       else if((ss[0]== 2 )&&(ss[1]== 0 )&&(ss[2]== 2 )&&(ss[n-1]== 0 ))       {           cout<< Yes <<endl;       }       else if((ss[0]== 2 )&&(ss[1]== 0 )&&(ss[2]== 2 )&&(ss[3]== 0 ))       {           cout<< Yes <<endl;       }       else if((ss[n-1]== 0 )&&(ss[n-2]== 2 )&&(ss[n-3]== 0 )&&(ss[n-4]== 2 ))       {           cout<< Yes <<endl;       }       else       {           cout<< No <<endl;       }   }   }   