View Compilation Error

0_0_11492409_17888.cpp: In function `int main()':
0_0_11492409_17888.cpp:122: error: `dfs' undeclared (first use this function)
0_0_11492409_17888.cpp:122: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11492409_17888.cpp:129: error: redeclaration of `int cnt'
0_0_11492409_17888.cpp:103: error: `int cnt' previously declared here