View Compilation Error

0_0_6459994_3575.cpp:27:16: invalid suffix "s" on integer constant
0_0_6459994_3575.cpp: In function `void dfs(int)':
0_0_6459994_3575.cpp:35: error: `father' undeclared (first use this function)
0_0_6459994_3575.cpp:35: error: (Each undeclared identifier is reported only once for each function it appears in.)