Run id: 124030

Main.cc: In function 'int main()':
Main.cc:45:4: error: 'flag' was not declared in this scope
    flag = 0;
    ^
Main.cc:49:5: error: 'flag' was not declared in this scope
  if(flag==1) cout<<"yes";
     ^
Main.cc:41:6: warning: unused variable 's' [-Wunused-variable]
  int s=0;
      ^