View Compilation Error

0_0_4404609_14020.cpp: In function `int dfs(int)':
0_0_4404609_14020.cpp:18: error: expected `)' before '{' token
0_0_4404609_14020.cpp:24: error: name lookup of `i' changed for new ISO `for' scoping
0_0_4404609_14020.cpp:16: error:   using obsolete binding at `i'
0_0_4404609_14020.cpp: In function `void input()':
0_0_4404609_14020.cpp:53: error: name lookup of `i' changed for new ISO `for' scoping
0_0_4404609_14020.cpp:52: error:   using obsolete binding at `i'
0_0_4404609_14020.cpp:63: error: expected primary-expression before ')' token