| Codeforces Round #383 (Hard) |
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| Finished |
Just in case somebody missed it: we have wonderful girls in Arpa’s land.
Arpa has a rooted tree (connected acyclic graph) consisting of n vertices. The vertex 1 is the root. There is a letter written on each edge of this tree. Mehrdad is a fan of Dokhtar-kosh things. He call a string Dokhtar-kosh, if we can shuffle the characters in string such that it becomes palindrome.
He asks Arpa, for each vertex v, what is the length of the longest simple path in subtree of v that form a Dokhtar-kosh string.
The first line contains integer n (1 ≤ n ≤ 5·105) — the number of vertices in the tree.
(n - 1) lines follow, the i-th of them contain an integer pi and a letter ci (1 ≤ pi < i, ci is lowercase English letter), that mean that there is an edge between nodes pi and i and there is a letter ci written on this edge.
Print n integers. The i-th of them should be the length of the longest simple path in subtree of the i-th vertex that form a Dokhtar-kosh string.
4
1 s
2 a
3 s
3 1 1 0
5
1 a
2 z
1 a
4 z
4 1 0 1 0
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