#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
#include <iomanip>
using namespace std;

int main() {
    float ok=0,nr=0,okdoi=0,rest=0;
    long int n,g,i,j,k=0;
    vector <long int> numerezero;
    vector <long int> numereunu;
    int v[2000];
    float rapzero=0,rapunu=0;

    cin>>n>>g;
    for (i=0;i<n;i++)
    {
        cin>>v[i];
    }

    numereunu.push_back(1);
    numerezero.push_back(0);
    rest=n%g;
    if (rest==0)
    {
        nr=(float)n/(float)g;
        for(k=0;k<(int)nr;k++)
        {
            for (j = k * g; j < (k + 1) * g; j++) {
                if (v[j] == 1) ok++;
                else if (v[j] == 0) okdoi++;
            }
            if (ok == 0) {
                numerezero.push_back(0);
            } else if (ok != 0) {
                numerezero.push_back(1);
                for (j = k * g; j < (k + 1) * g; j++) {
                    numerezero.push_back(v[j]);
                }
            }
            if (okdoi == 0) {
                numereunu.push_back(1);
            } else if (okdoi != 0) {
                numereunu.push_back(0);
                for (j = k * g; j < (k + 1) * g; j++) {
                    numereunu.push_back(v[j]);
                }

            }
            ok = 0;
            okdoi = 0;

        }

    }

    else {
        nr=((float)n/(float)(g))+1;
        for(k=0;k<(int)nr-1;k++)
        {
            for (j = k * g; j < (k + 1) * g; j++) {
                if (v[j] == 1) ok++;
                else if (v[j] == 0) okdoi++;
            }
            if (ok == 0) {
                numerezero.push_back(0);
            } else if (ok != 0) {
                numerezero.push_back(1);
                for (j = k * g; j < (k + 1) * g; j++) {
                    numerezero.push_back(v[j]);
                }
            }
            if (okdoi == 0) {
                numereunu.push_back(1);
            } else if (okdoi != 0) {
                numereunu.push_back(0);
                for (j = k * g; j < (k + 1) * g; j++) {
                    numereunu.push_back(v[j]);
                }

            }
            ok = 0;
            okdoi = 0;
        }
        numerezero.push_back(1);
        numereunu.push_back(0);
        for(i=n-rest;i<n;i++)
        {
            numerezero.push_back(v[i]);
            numereunu.push_back(v[i]);
        }
    }

    rapzero=(float)(n)/(float)(numerezero.size());
    rapunu=(float)(n)/(float)(numereunu.size());

    if (rapzero>=rapunu)
    {
        cout<<fixed<<setprecision(2);
        cout<<rapzero<<endl;
        for (i=0;i<numerezero.size();i++)
        { cout<<numerezero[i]<<endl; }
    }
    else
    {
        cout<<fixed<<setprecision(2);
        cout<<rapunu<<endl;
        for (i=0;i<numereunu.size();i++)
        { cout<<numereunu[i]<<endl; }
    }

    return 0;
}