/in/foo.cc: In function 'int main()':
/in/foo.cc:33:9: error: 'cin' was not declared in this scope
   33 |         cin>>N>>M;
      |         ^~~
/in/foo.cc:39:9: error: 'cout' was not declared in this scope
   39 |         cout<<minfull(N,M);
      |         ^~~~