#include <iostream>
#include<fstream>
#include<math.h>
#include<algorithm>
using namespace std;
double p[10001],v[10001];
int main()
{
    ifstream f("rucsac.in");
    ofstream g("rucsac.out");
    int n,G;
    f>>n>>G;
    for(int i=1;i<=n;++i){
        f>>v[i]>>p[i];
        p[i]=(double)((double)(p[i])/v[i]);
    }
    double aux=0;
    for(int i=1;i<n;++i){
        for(int j=i+1;j<=n;++j){
            if(p[i]<p[j]){
                swap(p[i],p[j]);
                swap(v[i],v[j]);
            }
            if(p[i]==p[j]&&v[i]<v[j]){
                swap(p[i],p[j]);
                swap(v[i],v[j]);
            }
        }
    }
    double pret=0;
    for(int i=1;i<=n;++i){
            cout<<p[i]<<" ";
        if(v[i]<=G){
            pret+=(double(p[i])*double(v[i]));
            G-=v[i];
        }
    }
    cout<<"\n";
    for(int i=1;i<=n;++i){
         cout<<v[i]<<" ";
    }
    g<<pret;
    return 0;
}