/in/foo.cc:15:7: error: 'INF' does not name a type; did you mean 'SING'?
 const INF=0x3f3f3f3f;
       ^~~
       SING
/in/foo.cc: In function 'int main()':
/in/foo.cc:65:1: error: expected '}' at end of input
 }
 ^
/in/foo.cc:65:1: error: expected '}' at end of input
/in/foo.cc:41:6: warning: unused variable 'num' [-Wunused-variable]
  int num = 0;
      ^~~
/in/foo.cc:65:1: error: expected '}' at end of input
 }
 ^