func_code_string: #include <bits/stdc++.h>   using namespace std;   vector<pair<int, int> > g[100010];   int N, K, in[100010], dp[100010][2];   vector<pair<int, int> > num[100010];   void dfs(int u, int fa) {     for (pair<int, int>& e : g[u]) {       int v = e.first, cost = e.second;       if (v == fa) continue;       dfs(v, u);       num[u].push_back(pair<int, int>(dp[v][1] + cost, v));     }     sort(num[u].begin(), num[u].end(), greater<pair<int, int> >());     dp[u][1] = 0;     int sum = 0;     for (size_t i = 0; (int)i < K - 1 && i < num[u].size(); i++) {       dp[u][1] += num[u][i].first;       sum += num[u][i].first;     }     if ((int)num[u].size() <= K - 1) {       for (size_t i = 0; i < num[u].size(); i++) {         int v = num[u][i].second;         dp[u][0] = max(dp[u][0], sum - dp[v][1] + dp[v][0]);       }     } else {       for (size_t i = 0; i < (int)K - 1; i++) {         int v = num[u][i].second;         dp[u][0] = max(dp[u][0], sum + num[u][K - 1].first - dp[v][1] + dp[v][0]);       }       for (size_t i = K - 1; i < num[u].size(); i++) {         int v = num[u][i].second;         dp[u][0] = max(dp[u][0], sum + num[u][i].first - dp[v][1] + dp[v][0]);       }     }   }   int main() {     int u, v, c;     scanf( %d%d , &N, &K);     for (int i = 1; i < N; i++) {       scanf( %d%d%d , &u, &v, &c);       g[u].push_back(pair<int, int>(v, c));       g[v].push_back(pair<int, int>(u, c));     }     dfs(0, -1);     printf( %d n , max(dp[0][0], dp[0][1]));     return 0;   }   