Laskettelukeskus

#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<ll> vl;

vector<int> v[100007];
ll c[100007];

ll dfs(int i){
    ll s = 0;
    for(int j : v[i]){
        s += dfs(j);
    }
    return max(s, c[i]);
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n; cin >> n;
    for(int i = 1; i < n; i++){
        int a, b; cin >> a >> b;
        v[a].push_back(b);
    }
    for(int i = 1; i < n; i++) cin >> c[i];

    cout << dfs(1) << endl;
}


/*
auto start = std::chrono::high_resolution_clock::now();
auto end = std::chrono::high_resolution_clock::now();
cout << "TIME: " << std::chrono::duration_cast<std::chrono::milliseconds>(end-start).count() / 1000.0 << "\n"; 
*/

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: WRONG ANSWER

Test 4

Group: 2

Verdict: ACCEPTED

Test 5

Group: 2

Verdict: WRONG ANSWER

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