11687

#include <iostream>
#include <cstdio>
#include <sstream>
#include <string>

using namespace std;

int main()
{
	int n,cnt;
	string s,t;
	stringstream ss;
	while(cin>>s)
	{
		if(s=="END")
		break;
		n=s.size();
		cnt=1;
		ss.clear();
		ss<<n;
		ss>>t;
		while(s!=t)
		{
			s=t;
			n=s.size();
			ss.clear();
			ss<<n;
			ss>>t;
			cnt+=1;
		}
		cout<<cnt<<"\n";
	}
	return 0;
}