Laskettelukeskus

#include <iostream>
#include <vector>
#include <map>
using namespace std;

int main(){
    int n;
    cin >> n;
 
    map<int, vector<int>> routes;
    for(int i = 0; i < n-1; i++){
        int a, b;
        cin >> a >> b;
        routes[a].push_back(b);
    }
    map<int, int> times;
    for(int i = 1; i <= n; i++){
        int c;
        cin >> c;
        times[i] = c;
    }
    
    int snowplows = 0;

    for (int i = 1; i <= n; i++) {
        int sum = 0;
        for (int c : routes[i])
            sum += times[c];
        if (sum < times[i]) {
            snowplows += times[i] - sum;
        }
    }

    cout << snowplows;

}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: WRONG ANSWER

Test 3

Group: 1, 2

Verdict: WRONG ANSWER

Test 4

Group: 2

Verdict: WRONG ANSWER

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: WRONG ANSWER

Test 11

Group: 2

Verdict: WRONG ANSWER

Test 12

Group: 1, 2

Verdict: ACCEPTED

Test 13

Group: 2

Verdict: WRONG ANSWER