View Compilation Error

107512_0_10904.cpp: In function `void DFS(int, int, int, int)':
107512_0_10904.cpp:13: error: `count' undeclared (first use this function)
107512_0_10904.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)
107512_0_10904.cpp: In function `int main()':
107512_0_10904.cpp:40: error: `count' undeclared (first use this function)