func_code_string:       //================code===================//      //#define TLE      #ifdef TLE   #pragma GCC optimize( O3 )   #pragma GCC optimize( Ofast )   #pragma GCC optimize( unroll-loops )   #endif      #include <bits/stdc++.h>   #include <unordered_map>   #include <unordered_set>   #include <random>   #include <ctime>      #define ci(t) cin>>t   #define co(t) cout<<t   #define LL long long   #define ld long double   #define fa(i,a,b) for(LL i=(a);i<(LL)(b);++i)   #define fd(i,a,b) for(LL i=(a);i>(LL)(b);--i)   #define setp pair<pair<int,int>,int>   #define setl pair<LL,LL>      #define M_PI 3.14159265358979323846   #define micro 0.000001      using namespace std;      #ifdef OHSOLUTION   #define ce(t) cerr<<t   #define AT cerr <<   n=================ANS================= n    #define AE cerr <<   n===================================== n    LL gcd(LL a, LL b) { return a % b ? gcd(b, a % b) : b; }   LL lcm(LL a, LL b) { return (a * b) / gcd(a, b); }   #else   #define AT   #define AE   #define ce(t)   #define __popcnt __builtin_popcount   #define gcd __gcd   #define lcm __lcm   #endif         pair <int, int> vu[9] = { {0,1},{1,0},{0,-1} ,{-1,0},{0,0},{1,1}, {-1,1} , {1,-1},{-1,-1} }; //RDLU EWSN      template<typename T, typename U> void ckmax(T& a, U b) { a = a < b ? b : a; }   template<typename T, typename U> void ckmin(T& a, U b) { a = a > b ? b : a; }   struct gcmp { bool operator()(LL a, LL b) { return a < b; } bool operator()(setl a, setl b) { return a.second < b.second; } };   struct lcmp { bool operator()(LL a, LL b) { return a > b; } bool operator()(setl a, setl b) { return a.second > b.second; } };      const int max_v = 2e5 + 7;   const int INF = 1e9 + 7;   const LL LNF = (LL)1e18 + 7ll;   const LL mod = 1e9 + 7;      int v, e;   vector <setl> adj[max_v];   LL dist[max_v][57];   bool vist[max_v][57];      struct node   {    LL first, second;    LL cost;   };      struct cmp   {    bool operator()(const node& x, const node& b)    {     return x.second > b.second;    }   };      int main()   {   #ifdef OHSOLUTION    freopen( input.txt ,  r , stdin);   #endif     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);    ci(v >> e);       fa(i, 0, e)    {     int x, y, cost; ci(x >> y >> cost), --x, --y;     adj[x].push_back({ y,cost });     adj[y].push_back({ x,cost });    }        priority_queue<node, vector<node>, cmp> pq;    fa(i, 0, v) fa(j, 0, 51) dist[i][j] = INF;    dist[0][0] = 0;    pq.push({ 0,0 ,0});       while (!pq.empty())    {     node cur;     do     {      cur = pq.top(); pq.pop();     } while (!pq.empty() && vist[cur.first][cur.cost]);        if (vist[cur.first][cur.cost]) break;     vist[cur.first][cur.cost] = 1;        if (cur.cost)     {      for (auto x : adj[cur.first])      {       if (dist[x.first][0] > dist[cur.first][cur.cost] + (cur.cost + x.second) * (cur.cost + x.second))       {        dist[x.first][0] = dist[cur.first][cur.cost] + (cur.cost + x.second) * (cur.cost + x.second);        pq.push({ x.first,dist[x.first][0],0 });       }      }     }     else     {      for (auto x : adj[cur.first])      {       if (dist[x.first][x.second] > dist[cur.first][cur.cost])       {        dist[x.first][x.second] = dist[cur.first][cur.cost];        pq.push({ x.first,dist[x.first][x.second],x.second });       }      }     }    }       fa(i, 0, v) dist[i][0] == INF ? co(-1 <<    ) : co(dist[i][0] <<    );          return 0;   }