View Compilation Error

0_0_32793634_13027.cpp:22:17: error: unable to find numeric literal operator 'operator""x'
 const int INF = 0x
                 ^
0_0_32793634_13027.cpp:22:17: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes
0_0_32793634_13027.cpp:22:17: error: expected ',' or ';' at end of input