func_code_string: #include <bits/stdc++.h>   using namespace std;   const int MOD = 1e9 + 7;   const long double PI = 3.1415926535898;   const long long LLMAX = LLONG_MAX;   int a[(int)2e5 + 5], b[(int)2e5 + 5], c[(int)2e5 + 5];   int n;   vector<vector<int> > v((int)2e5 + 5);   int type10 = 0;   int type01 = 0;   long long ans = 0;   int one[(int)2e5 + 5] = {0};   int zero[(int)2e5 + 5] = {0};   void solve(int parent, int node) {     if (b[node] != c[node]) {       if (b[node])         one[node]++;       else         zero[node]++;     }     if (parent) a[node] = min(a[node], a[parent]);     for (int i = 0; i < v[node].size(); i++) {       if (v[node][i] == parent)         continue;       else {         solve(node, v[node][i]);         one[node] += one[v[node][i]];         zero[node] += zero[v[node][i]];       }     }     int dec = min(one[node], zero[node]);     one[node] -= dec;     zero[node] -= dec;     ans += (long long)a[node] * 2 * dec;   }   int main() {     int x, y;     cin >> n;     for (int i = 1; i <= n; i++) {       cin >> a[i] >> b[i] >> c[i];       if (b[i] == 0 && c[i] == 1)         type01++;       else if (b[i] == 1 && c[i] == 0)         type10++;     }     for (int i = 1; i < n; i++) {       cin >> x >> y;       v[x].push_back(y);       v[y].push_back(x);     }     solve(0, 1);     if (type01 != type10) {       cout << -1 <<   n ;     } else {       cout << ans <<   n ;     }   }   