18504번 - Bracket Euler Tour 스페셜 저지다국어

문제

You are given an undirected graph with n vertices and m edges. Each vertex has a bracket (either opening “(” or closing “)”) associated with it.

You have to find an Euler tour in this graph such that its vertices (written in traversal order) form a correct bracket sequence.

A correct bracket sequence is a sequence of brackets that can be transformed into a correct arithmetic expression by inserting characters “1” and “+” between the original characters of the sequence. For example, bracket sequences “()()”, “(())” are correct (the resulting expressions are “(1)+(1)” and “((1+1)+1)”), while “)(” and “()(” are not.

An Euler tour of an undirected graph is a cycle which visits every edge in this graph exactly once. It is allowed to visit the same vertex multiple times, though.

입력

The first line contains two integers n and m (1 ≤ n, m ≤ 2 · 10⁵), the number of vertices and edges respectively.

Each of the following m lines contains two integers v_i and u_i (1 ≤ v_i, u_i ≤ n), meaning that there is an undirected edge between vertices v_i and u_i. Note that self-loops and multiple edges are allowed.

The last line of the input contains a string of n round brackets, where the i-th bracket is associated with vertex i.

출력

If there is no Euler tour in the given graph that forms a correct bracket sequence, print “No” in the first line.

Otherwise, print “Yes” in the first line. In the second line, print a sequence of vertices that form an Euler tour and also a correct bracket sequence. If there are multiple solutions, print any of them.

제한

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