rt，感觉是很SB的错误，但看不出来，有没有过路大佬来调一调qwq

#include <bits/stdc++.h>
using namespace std;
const int N = 3010;
int n;
int a[N];
vector<int> e[N];

bool dfs(int x, int fa)
{
    bool f = 0;
    for(int i = 0; i < e[x].size(); i++)
    {
        if(e[x][i] == fa) continue;
        if(!dfs(e[x][i], x) && a[i] > a[e[x][i]]) f = 1;
    }
    return f;
}

int main()
{
    std::ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++) cin >> a[i];
    for(int i = 1; i < n; i++) 
    {
        int x, y;
        cin >> x >> y;
        e[x].push_back(y);
        e[y].push_back(x);
    }
    for(int i = 1; i <= n; i++)
    {
        if(dfs(i, 0)) cout << i << " ";
    }
    return 0;
}