#include <stdio.h>

int main()
{
    	int r,i=0;
    	int tab[10000];


        do {

        scanf("%d",&tab[i]);
            if(tab[i]<0||tab[i]>3) break;

            i++;

        }
        while(tab[i] != EOF);


       for(r=0;r<=i;r++)
       {
         printf("%d\t",tab[i]);  }




        return 0;