View Compilation Error

0_0_13048973_9726.cpp: In function `void dfs(int, int)':
0_0_13048973_9726.cpp:30: error: `count' undeclared (first use this function)
0_0_13048973_9726.cpp:30: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_13048973_9726.cpp: In function `int judge_rec()':
0_0_13048973_9726.cpp:53: error: `count' undeclared (first use this function)
0_0_13048973_9726.cpp: In function `int main()':
0_0_13048973_9726.cpp:98: error: `count' undeclared (first use this function)