#include<stdio.h>
unsigned long fun(unsigned long n)
{
	unsigned long x=0;int t;
	while(n){
		t=n%10;
		if(n%2==0)
			x=10*x+t;
		n=n/10;
	}
	return x;
}
main()
{
	unsigned long n=-1;
	while(n>99999999||n<0){
		printf("Please input (0<n<100000000):");
		scanf("%ld",&n);
	}
	printf("\nThe result is:%ld\n",fun(n));
}