/in/foo.cc:9:6: error: stray '#' in program
     }#include <cstdio>
      ^
/in/foo.cc:9:7: error: 'include' does not name a type
     }#include <cstdio>
       ^~~~~~~
/in/foo.cc: In constructor 'my_set::my_set(unsigned int)':
/in/foo.cc:80:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int i = 0; i < size; i++)
                         ~~^~~~~~