/in/foo.cc: In function 'int main()':
/in/foo.cc:13:3: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   else
   ^~~~
/in/foo.cc:14:22: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
    cout<<"No"<<endl; 0;
                      ^
/in/foo.cc:14:23: warning: statement has no effect [-Wunused-value]
    cout<<"No"<<endl; 0;
                       ^