0_0_30091346_14064.cpp: In function 'void dfs(int, int)':
0_0_30091346_14064.cpp:20:26: error: expected statement at end of input
if (son != parent)
^
0_0_30091346_14064.cpp:20:26: error: expected '}' at end of input
0_0_30091346_14064.cpp:20:26: error: expected '}' at end of input
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