#include <bits/stdc++.h>   usingnamespacestd;   intx[10001],y[10001];   intmain()   {       intt,n;       doublem;       scanf("%d",&t);       while(t--)       {           scanf("%d %lf",&n,&m);           for(inti=0;i<n;i++)               scanf("%d%d&quo...