View Compilation Error

0_0_6627010_14324.cpp: In function `int isap(int, int, int)':
0_0_6627010_14324.cpp:31: error: `INF' undeclared (first use this function)
0_0_6627010_14324.cpp:31: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6627010_14324.cpp: In function `int build(int)':
0_0_6627010_14324.cpp:111: error: `INF' undeclared (first use this function)