#include <iostream>

using namespace std;

int main()
{
    int a,b,c,d,nr;
    cout<<"nr=";
    cin>>nr;
    a=nr/1000;
    b=nr/100-nr/1000*10;
    c=(nr%100)/10;
    d=nr%10;
    cout<<a<<" "<<b<<" "<<c<<" "<<d;
    return 0;
}