아직 만들고 있는 페이지입니다.

이 페이지는 아직 만드는 중입니다. 보이는 내용은 바뀔 수 있습니다.

1-Trees and Queries

시간 제한4초메모리 제한512 MB

요약
트리에 간선 (x, y)를 임시로 추가했을 때 정점 a에서 b까지 정확히 k개의 간선을 지나는 경로가 존재하는지 각 질의마다 판정한다.
난이도

보통10점 중 7점

유형
트리, 그래프, 최단 경로, 수학
정답자
아직 제출이 없습니다

문제

Gildong was hiking a mountain, walking by millions of trees. Inspired by them, he suddenly came up with an interesting idea for trees in data structures: What if we add another edge in a tree?

Then he found that such tree-like graphs are called 1-trees. Since Gildong was bored of solving too many tree problems, he wanted to see if similar techniques in trees can be used in 1-trees as well. Instead of solving it by himself, he's going to test you by providing queries on 1-trees.

First, he'll provide you a tree (not 1-tree) with nn vertices, then he will ask you qq queries. Each query contains 55 integers: xx, yy, aa, bb, and kk. This means you're asked to determine if there exists a path from vertex aa to bb that contains exactly kk edges after adding a bidirectional edge between vertices xx and yy. A path can contain the same vertices and same edges multiple times. All queries are independent of each other; i.e. the added edge in a query is removed in the next query.

입력

The first line contains an integer nn (3≤n≤1053 \le n \le 10^5), the number of vertices of the tree.

Next n−1n-1 lines contain two integers uu and vv (1≤u,v≤n1 \le u,v \le n, u≠vu \ne v) each, which means there is an edge between vertex uu and vv. All edges are bidirectional and distinct.

Next line contains an integer qq (1≤q≤1051 \le q \le 10^5), the number of queries Gildong wants to ask.

Next qq lines contain five integers xx, yy, aa, bb, and kk each (1≤x,y,a,b≤n1 \le x,y,a,b \le n, x≠yx \ne y, 1≤k≤1091 \le k \le 10^9) – the integers explained in the description. It is guaranteed that the edge between xx and yy does not exist in the original tree.

출력

For each query, print "YES" if there exists a path that contains exactly kk edges from vertex aa to bb after adding an edge between vertices xx and yy. Otherwise, print "NO".

You can print each letter in any case (upper or lower).

힌트

The image below describes the tree (circles and solid lines) and the added edges for each query (dotted lines).

Possible paths for the queries with "YES" answers are:

  • 11-st query: 11 – 33 – 22
  • 22-nd query: 11 – 22 – 33
  • 44-th query: 33 – 44 – 22 – 33 – 44 – 22 – 33 – 44 – 22 – 33

예제1

  1. 예제 1

    입력
    5
    1 2
    2 3
    3 4
    4 5
    5
    1 3 1 2 2
    1 4 1 3 2
    1 4 1 3 3
    4 2 3 3 9
    5 2 3 3 9
    
    예상 출력
    YES
    YES
    NO
    YES
    NO