func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 1005;   const double inf = 1e9;   int n, m, x[N], b[N], pre[N];   double dp[N];   bool check(double mid) {     for (int i = 1; i <= n; i++) dp[i] = inf;     for (int i = 0; i <= n; i++) {       for (int j = i + 1; j <= n; j++) {         double tmp = dp[i] + sqrt(abs(x[j] - x[i] - m)) - 1.0 * mid * b[j];         if (dp[j] > tmp) {           dp[j] = tmp;           pre[j] = i;         }       }     }     return dp[n] >= 0;   }   void prnt(int x) {     if (x == 0) return;     prnt(pre[x]);     printf( %d  , x);   }   int main() {     scanf( %d%d , &n, &m);     for (int i = 1; i <= n; i++) scanf( %d%d , &x[i], &b[i]);     double l = 0.0, r = 1e5;     while (r - l > 1e-8) {       double mid = (l + r) / 2;       if (check(mid))         l = mid;       else         r = mid;     }     prnt(n);     return printf(  n ), 0;   }   