View Compilation Error

0_0_2181718_10791.cpp:7: error: expected init-declarator before "int"
0_0_2181718_10791.cpp:7: error: expected `,' or `;' before "int"
0_0_2181718_10791.cpp: In function `int main()':
0_0_2181718_10791.cpp:34: error: `m' undeclared (first use this function)
0_0_2181718_10791.cpp:34: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2181718_10791.cpp:44: error: `dfs' undeclared (first use this function)