func_code_string: #include <bits/stdc++.h>   using namespace std;   vector<pair<long long, long long> > g[100005];   long long n, ans, ans2;   void dfs(long long u, long long p, long long cur) {     ans2 = max(ans2, cur);     for (auto e : g[u])       if (e.first != p) dfs(e.first, u, cur + e.second);   }   signed main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     cin >> n;     for (long long i = 1; i <= n - 1; i++) {       long long a, b, w;       cin >> a >> b >> w;       g[a].push_back({b, w});       g[b].push_back({a, w});       ans += w * 2;     }     dfs(1, 0, 0);     cout << ans - ans2;   }   