View Compilation Error

39857_0_17549.cpp: In function `void dfs(int, int)':
39857_0_17549.cpp:16: error: `count' undeclared (first use this function)
39857_0_17549.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.)
39857_0_17549.cpp: In function `int main()':
39857_0_17549.cpp:57: error: `count' undeclared (first use this function)