11687 Digits

#include<stdio.h>
#include<string.h>
char a[10000010];
int p;
int solve(int x)
{ 
	int y;
	sprintf(a,"%d",x);
	y=strlen(a);
	p++;
	if(x==y) return p;
	solve(y);
}
int main()
{
	while(gets(a)){
		p=1;
		if(strcmp(a,"END")==0) break;
		else if(strcmp(a,"1")==0) puts("1");
		else printf("%d\n",solve(strlen(a)));
	}
	return 0;
}