View Compilation Error

0_0_6828695_30118.cpp: In function `bool Topsort(int)':
0_0_6828695_30118.cpp:13: error: `count' undeclared (first use this function)
0_0_6828695_30118.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6828695_30118.cpp: In function `int main()':
0_0_6828695_30118.cpp:52: error: `count' undeclared (first use this function)