func_code_string: #include <bits/stdc++.h>   using namespace std;   struct Edge {     int v;     int w;     Edge* next;     void add(int v, int w, Edge*& head) {       this->v = v;       this->w = w;       this->next = head;       head = this;     }   } edges[200100];   Edge* h[100100];   struct Q {     int v;     int t;     bool operator<(const Q& q) const { return v < q.v || v == q.v && t < q.t; }     void init(int v, int t) {       this->v = v;       this->t = t;     }   } q[100100], q0;   void addEdge(int v1, int v2, int w) {     static Edge* e = edges;     (e++)->add(v2, w, h[v1]);     (e++)->add(v1, w, h[v2]);   }   int d[100010];   struct CMP {     bool operator()(int a, int b) const {       return d[a] < d[b] || d[a] == d[b] && a < b;     }   };   set<int, CMP> heap;   int main() {     int n, m;     scanf( %d %d , &n, &m);     for (int i = 0; i < m; i++) {       int v1, v2, w;       scanf( %d %d %d , &v1, &v2, &w);       v1--, v2--;       addEdge(v1, v2, w);     }     int u = 0;     for (int i = 0; i < n; i++) {       int k;       scanf( %d , &k);       for (int j = 0; j < k; j++) {         int t;         scanf( %d , &t);         q[u++].init(i, t);       }     }     memset(d, 127, sizeof(d));     d[0] = 0;     heap.insert(0);     while (!heap.empty()) {       int v = *heap.begin();       heap.erase(heap.begin());       if (v == n - 1) {         printf( %d n , d[v]);         return 0;       }       int dist = d[v];       q0.init(v, dist);       Q* qi = lower_bound(q, q + u, q0);       while (qi < q + u && qi->v == v && qi->t == dist) {         dist++;         qi++;       }       for (Edge* e = h[v]; e; e = e->next) {         if (d[e->v] > dist + e->w) {           heap.erase(e->v);           d[e->v] = dist + e->w;           heap.insert(e->v);         }       }     }     printf( -1 n );     return 0;   }   