View Compilation Error

0_0_4591248_22367.cpp: In function `void CutBlock(int)':
0_0_4591248_22367.cpp:2: error: `dfn' undeclared (first use this function)
0_0_4591248_22367.cpp:2: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4591248_22367.cpp:2: error: `low' undeclared (first use this function)
0_0_4591248_22367.cpp:2: error: `cnt' undeclared (first use this function)
0_0_4591248_22367.cpp:3: error: `st' undeclared (first use this function)
0_0_4591248_22367.cpp:3: error: `top' undeclared (first use this function)
0_0_4591248_22367.cpp:4: error: `p' undeclared (first use this function)
0_0_4591248_22367.cpp:4: error: `edge' undeclared (first use this function)
0_0_4591248_22367.cpp:8: error: `GetMin' undeclared (first use this function)
0_0_4591248_22367.cpp:10: error: `block' undeclared (first use this function)
0_0_4591248_22367.cpp:17: error: `Count' undeclared (first use this function)