Laskettelukeskus

#include <bits/stdc++.h>

using namespace std;
using ll=long long;

ll h[100001];
vector<ll> t[100001];

ll rec(int cur) {
    ll m=0;
    for (auto b: t[cur]) {
        ll to_add=rec(b);
        m+=to_add;
    }
    return max(h[cur], m);
}

int main()
{
    int n;
    cin >> n;
    for (int i=1; i<n; i++) {
        ll a, b;
        cin >> a >> b;
        t[a].push_back(b);
    }
    for (int i=1; i<=n; i++) {
        ll a;
        cin >> a;
        h[i]=a;
    }
    
    ll ans=rec(1);
    cout << ans;
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 2

Verdict: ACCEPTED

Test 5

Group: 2

Verdict: ACCEPTED

Test 6

Group: 1, 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 1, 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 1, 2

Verdict: ACCEPTED

Test 11

Group: 2

Verdict: ACCEPTED

Test 12

Group: 1, 2

Verdict: ACCEPTED

Test 13

Group: 2

Verdict: ACCEPTED