simple dfs code.... why is it not working? please help input : 6 1 1 6 1 2 2 3 2 5 3 4 4 5 code : http://pastebin.com/EazYw5af my code run properly when I remove printf which is out of for loop in dfs function. If I write printf function... it does not work... strange..

problem : http://mirror.codeforces.com/contest/714/problem/B code : http://pastebin.com/bD9sBRgT

please, My code was absolutely right but I got Wa test no 37. Anybody can help me why my code got wa test case 37 . I did not find any bug. problem : http://mirror.codeforces.com/contest/711/problem/A my code: http://pastebin.com/x8JYay6J