func_code_string: #include <bits/stdc++.h>   using namespace std;   template <typename Arg1>   void __f(const char* name, Arg1&& arg1) {     cerr << name <<   :   << arg1 << std::endl;   }   template <typename Arg1, typename... Args>   void __f(const char* names, Arg1&& arg1, Args&&... args) {     const char* comma = strchr(names + 1,  , );     cerr.write(names, comma - names) <<   :   << arg1 <<   |  ;     __f(comma + 1, args...);   }   const int M = 100;   int cal(int t) { return (t >= 0 ? t : -t); }   int n, d, a[M + 5], x[M + 5], y[M + 5], dist[M + 5][M + 5];   int main() {     scanf( %d %d , &n, &d);     for (int i = 2; i < n; i++) scanf( %d , &a[i]);     for (int i = 1; i <= n; i++) scanf( %d %d , &x[i], &y[i]);     for (int i = 1; i <= n; i++)       for (int j = 1; j <= n; j++)         dist[i][j] =             (i == j ? 0 : cal(x[i] - x[j]) * d + cal(y[i] - y[j]) * d - a[j]);     for (int k = 1; k <= n; k++)       for (int i = 1; i <= n; i++)         for (int j = 1; j <= n; j++)           dist[i][j] = min(dist[i][j], dist[i][k] + dist[k][j]);     printf( %d , dist[1][n]);   }   