View Compilation Error

0_0_2898436_7238.cpp: In function `bool dfs(int, int)':
0_0_2898436_7238.cpp:34: error: expected `)' before "dp"
0_0_2898436_7238.cpp:46: error: `ans' undeclared (first use this function)
0_0_2898436_7238.cpp:46: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2898436_7238.cpp:46: error: `top' undeclared (first use this function)