#include <stdio.h> 

int main(void){
	
	
	int a;
	
	scanf("%d", &a);
	printf("该数的位数为%d\n", 
	(a/10==0?1:(a/100==0?2:(a/1000==0?3:(a/10000==0?4:5)))));
	printf("%d", a%10);
	if(a%100/10 != 0){
		printf("%d", a%100/10);
	}
	if(a%1000/100 != 0){
		printf("%d", a%1000/100);
	}
	if(a%10000/1000 != 0){
		printf("%d", a%10000/1000);
	}
	if(a/10000 != 0){
		printf("%d", a/10000);
	}
	printf("\n");
	return 0;
}