View Compilation Error

0_0_6114042_30090.cpp: In function `long long int sap(int, int)':
0_0_6114042_30090.cpp:61: error: `INF' undeclared (first use this function)
0_0_6114042_30090.cpp:61: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6114042_30090.cpp: In function `int main()':
0_0_6114042_30090.cpp:125: error: `INF' undeclared (first use this function)