#include<iostream>
#include<sstream>
using namespace std;
//int转为string 
string reversal(int x){
	stringstream s1;
	string s2;
	s1 << x;
	s1 >> s2;
	return s2;
}
int main(){
	string s,last;
	int num;
	while(cin>>s){
		last+=s;
		if(cin.get()=='\n'){
			num=last.length();
			break;
		}
	}
	for(int i=0;i<num-1;i++){
		cin>>s;
		last+=s;
	}
	
	s="";
	s+=reversal(num);
	s+=" ";
	num=0;
	if(last[0]!='0'){
		s+="0 ";
	}
	for(int i=1;i<=last.length();i++){
		
		if(last[i]==last[i-1]){
			num++;
		}else{
			
			s+=reversal(num+1);
			s+=" ";
			num=0;
		}
	}
	cout<<s;
	return 0;
}