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0_0_15763710_16212.cpp: In function 'void dfs(int, int)':
0_0_15763710_16212.cpp:42:23: error: expected ')' at end of input
   printf("%d: ",tot++%2
                       ^
0_0_15763710_16212.cpp:42:23: error: expected '}' at end of input
0_0_15763710_16212.cpp:42:23: error: expected '}' at end of input