View Compilation Error

0_0_9179692_6407.cpp: In function `void dfs(int, int)':
0_0_9179692_6407.cpp:17: error: `count' undeclared (first use this function)
0_0_9179692_6407.cpp:17: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9179692_6407.cpp: In function `void work()':
0_0_9179692_6407.cpp:77: error: `count' undeclared (first use this function)