#include <bits/stdc++.h> #include<math.h> #include <string> using namespace std; const int MAX_LEN = 100005; bool cmp(double a,double b){ return a > b; } int main(){ int n,d; cin>>n; cin>>d; double temp[n]; double result[n]; for(int i=0;i<n;++i){ cin>>temp[i]; } for(int i=0;i<n;++i){ cin>>result[i]; } double res[n]; for(int i =0;i<n;++i){ res[i] = result[i] / temp[i]; } //sort(res,res+n,cmp); double rs = 0; while(d != 0){ int count = 0; for(int i =0;i<n;++i){ if(res[i]>res[count] && (temp[i] > 0)){ count = i; } } if(temp[count] != 0 && d>=temp[count]){ d = d - temp[count]; temp[count] = 0; rs += result[count]; continue; } if(temp[count] != 0 && d<=temp[count]){ rs += d * res[count]; d = 0; continue; } } printf("%.2f ",rs); system("pause"); return 0; }