// take a range such as A and B from the user and print the even numbers within this range//
#include<stdio.h>
int main()
{
int a,b,i;

scanf("%d %d",&a,  &b);
for(i=a; i<=b; i++)
    {
        if(i%2==0)
        {
            printf("%d ",i);
        }

    }
 return 0;
}