Laskettelukeskus

input/code.cpp: In function 'int min_needed(int, int)':
input/code.cpp:14:22: warning: comparison of integer expressions of different signedness: 'long unsigned int' and 'int' [-Wsign-compare]
   14 |         if (neighbor != parent) {
      |             ~~~~~~~~~^~~~~~~~~

#include <bits/stdc++.h>

using namespace std;

int n;
vector<uint64_t> neighbors[100000];
int kerrat[100000];

int min_needed(int node, int parent)
{
    int res = 0;

    for (auto neighbor : neighbors[node]) {
        if (neighbor != parent) {
            res += min_needed(neighbor, node);
            //cout << node << " " << neighbor << endl;
        }
    }

    return max(res, kerrat[node]);
}

int main()
{
    cin >> n;

    for (int i = 0; i < n - 1; i++) {
        int a, b;
        cin >> a >> b;
        a--;
        b--;
        neighbors[a].push_back(b);
        neighbors[b].push_back(a);
    }

    for (int i = 0; i < n; i++) {
        uint64_t a;
        cin >> a;
        kerrat[i] = a;
    }

    //cout << "DEBUG" << endl;
    cout << min_needed(0, -1) << endl;
}

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: 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: ACCEPTED

Test 11

Group: 2

Verdict: WRONG ANSWER

Test 12

Group: 1, 2

Verdict: ACCEPTED

Test 13

Group: 2

Verdict: WRONG ANSWER