#include <bits/stdc++.h>   #pragma GCC optimize( O3 )   using namespace std;   struct custom_hash {     static uint64_t splitmix64(uint64_t x) {       x += 0x9e3779b97f4a7c15;       x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;       x = (x ^ (x >> 27)) * 0x94d049bb133111eb;       return x ^ (x >> 31);     }     size_t operator()(uint64_t x) const {       static const uint64_t FIXED_RANDOM =           chrono::steady_clock::now().time_since_epoch().count();       return splitmix64(x + FIXED_RANDOM);     }   };   template <typename T, size_t N>   int SIZE(const T (&t)[N]) {     return N;   }   template <typename T>   int SIZE(const T &t) {     return t.size();   }   string to_string(const string s, int x1 = 0, int x2 = 1e9) {     return     + ((x1 < s.size()) ? s.substr(x1, x2 - x1 + 1) :   ) +    ;   }   string to_string(const char *s) { return to_string((string)s); }   string to_string(const bool b) { return (b ?  true  :  false ); }   string to_string(const char c) { return string({c}); }   template <size_t N>   string to_string(const bitset<N> &b, int x1 = 0, int x2 = 1e9) {     string t =   ;     for (int __iii__ = min(x1, SIZE(b)), __jjj__ = min(x2, SIZE(b) - 1);          __iii__ <= __jjj__; ++__iii__) {       t += b[__iii__] +  0 ;     }     return     + t +    ;   }   template <typename A, typename... C>   string to_string(const A(&v), int x1 = 0, int x2 = 1e9, C... coords);   int l_v_l_v_l = 0, t_a_b_s = 0;   template <typename A, typename B>   string to_string(const pair<A, B> &p) {     l_v_l_v_l++;     string res =  (  + to_string(p.first) +  ,   + to_string(p.second) +  ) ;     l_v_l_v_l--;     return res;   }   template <typename A, typename... C>   string to_string(const A(&v), int x1, int x2, C... coords) {     int rnk = rank<A>::value;     string tab(t_a_b_s,    );     string res =   ;     bool first = true;     if (l_v_l_v_l == 0) res +=   n ;     res += tab +  [ ;     x1 = min(x1, SIZE(v)), x2 = min(x2, SIZE(v));     auto l = begin(v);     advance(l, x1);     auto r = l;     advance(r, (x2 - x1) + (x2 < SIZE(v)));     for (auto e = l; e != r; e = next(e)) {       if (!first) {         res +=  ,  ;       }       first = false;       l_v_l_v_l++;       if (e != l) {         if (rnk > 1) {           res +=   n ;           t_a_b_s = l_v_l_v_l;         };       } else {         t_a_b_s = 0;       }       res += to_string(*e, coords...);       l_v_l_v_l--;     }     res +=  ] ;     if (l_v_l_v_l == 0) res +=   n ;     return res;   }   void dbgm() { ; }   template <typename Heads, typename... Tails>   void dbgm(Heads H, Tails... T) {     cout << to_string(H) <<   |  ;     dbgm(T...);   }   const long long MOD = (int)1e9 + 7;   const long long INF = 2e18 + 5;   struct hashLL {     size_t operator()(long long x) const {       x = (x ^ (x >> 30)) * UINT64_C(0xbf58476d1ce4e5b9);       x = (x ^ (x >> 27)) * UINT64_C(0x94d049bb133111eb);       x = x ^ (x >> 31);       return x;     }   };   long long inv(long long a, long long b) {     return 1 < a ? b - inv(b % a, a) * b / a : 1;   }   long long gcd(long long a, long long b, long long &x, long long &y) {     if (a == 0) {       x = 0;       y = 1;       return b;     }     long long x1, y1;     long long d = gcd(b % a, a, x1, y1);     x = y1 - (b / a) * x1;     y = x1;     return d;   }   long long distsq(long long x1, long long y1, long long x2, long long y2) {     return (x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1);   }   const int N = 100001;   long long n, m, k, x, y, w;   unordered_map<int, unordered_map<int, int>> g;   string s;   pair<long long, long long> solve(long long curr, long long par) {     long long returnwt = 0;     long long endwt = 0;     vector<long long> v;     for (auto p : g[curr]) {       long long child = p.first;       long long wt = p.second;       if (child == par) continue;       returnwt += wt;       pair<long long, long long> x = solve(child, curr);       returnwt += x.first;       returnwt += wt;       if (-wt - wt - x.first + x.second + wt < endwt) {         endwt = -wt - wt - x.first + x.second + wt;       }     }     return {returnwt, returnwt + endwt};   }   int main() {     ios::sync_with_stdio(false);     cin.tie(0);     cin >> n;     for (int i = 0; i < (n - 1); i++) {       cin >> x >> y >> w;       g[x][y] = w;       g[y][x] = w;     }     long long res = solve(1, 0).second;     cout << res <<   n ;     return 0;   }