Problems like it

Правка en1, от StlenHandle, 2017-08-03 17:52:21

Hello Codeforces !!!

Does anyone know what have a Codeforces problems like it : 2

All vertices have only one son, expect root

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en2 Английский StlenHandle 2017-08-03 17:58:14 4 Tiny change: 'ne son, expect root \n' -> 'ne son, except root \n'
en1 Английский StlenHandle 2017-08-03 17:52:21 203 Initial revision (published)