// Source: https://usaco.guide/general/io #include <bits/stdc++.h> using namespace std; using ll = long long; #define eb emplace_back const ll cap = 5e4+1; vector<pair<ll,ll>> adj[cap]; int main() { ios::sync_with_stdio(0); cin.tie(0); ll v; cin >> v; ll ans = 0; for (ll i{}; i < v-1; i++){ ll a, b, w; cin >> a >> b >> w; adj[a].eb(b, w); adj[b].eb(a, w); ans += w; } cout << ans; }