/in/foo.cc:15:7: error: '__int64' does not name a type
 const __int64 INF = 0x7FFFFFFFFFFFFFFFLL;
       ^~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:31:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^