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#include <bits/stdc++.h>
#define f first
#define s second
using namespace std;
typedef long long ll;
typedef pair<int, int> ii;
int a[303];
vector<int> G[303];
void dfs(int u, int p) {
for (auto& v : G[u]) {
dfs(v, u);
}
}
int main() {
int N;
cin >> N;
for (int i = 0; i < N; ++i) cin >> a[i];
for (int i = 1; i < N; ++i) {
int u, v;
cin >> u >> v;
G[u].push_back(v), G[v].push_back(u);
}
dfs(1, 0);
}
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