func_code_string: #include <bits/stdc++.h>   using namespace std;   struct vac {     int l, r, cost, duration;     vac() : cost(-1) {}     vac(int l, int r, int cost) : l(l), r(r), cost(cost), duration(r - l + 1) {}   };   vector<vector<vac> > lifes(200001, vector<vac>(0)),       deaths(200001, vector<vac>(0));   vector<vac> cheapest(200001);   int min1(int x, int y) {     if (x == -1) return y;     if (y == -1) return x;     return min(x, y);   }   int main() {     int n, x;     cin >> n >> x;     int minAns = -1;     for (int i = 0; i < n; i++) {       int l, r, cost;       cin >> l >> r >> cost;       lifes[l].push_back(vac(l, r, cost));       deaths[r].push_back(vac(l, r, cost));     }     for (int i = 0; i < lifes.size(); i++) {       for (int j = 0; j < lifes[i].size(); j++) {         int d = lifes[i][j].duration;         if (d > x) continue;         if (cheapest[x - d].cost != -1)           minAns = min1(minAns, cheapest[x - d].cost + lifes[i][j].cost);       }       for (int j = 0; j < deaths[i].size(); j++) {         int d = deaths[i][j].duration;         cheapest[d].cost = min1(cheapest[d].cost, deaths[i][j].cost);       }     }     cout << minAns << endl;   }   