View Compilation Error

0_0_2442209_14549.cpp: In function `void Compute()':
0_0_2442209_14549.cpp:143: error: `l' undeclared (first use this function)
0_0_2442209_14549.cpp:143: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2442209_14549.cpp:143: error: `cmp' undeclared (first use this function)
0_0_2442209_14549.cpp:153: error: `Equal' undeclared (first use this function)
0_0_2442209_14549.cpp:155: error: `OnLine' undeclared (first use this function)
0_0_2442209_14549.cpp:163: error: `Min' undeclared (first use this function)
0_0_2442209_14549.cpp:167: error: `Max' undeclared (first use this function)