View Compilation Error

0_0_6180546_8057.cpp: In function `void dfs(int)':
0_0_6180546_8057.cpp:46: error: `de' undeclared (first use this function)
0_0_6180546_8057.cpp:46: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6180546_8057.cpp: In function `int main()':
0_0_6180546_8057.cpp:76: error: no match for 'operator>>' in 'fin >> name'