#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s;
	cin>>s;
	if(s.size()%3=='1') s="00"+s;
	if(s.size()%3=='2') s="0"+s;
	int ans=0;
	for(int i=0;i<=s.size()-1;i++){
		if(i%3==0){
			if(s[i]=='1')ans=ans+4;
			} 
		
		if(i%3==1){
		 	if(s[i]=='1')ans=ans+2;
		 } 
		if(i%3==2) {
			if(s[i]=='1'){
			ans=ans+1;
			cout<<ans;
			ans=0;
		}
	}
	
}
}


/**************************************************************
	Problem: 1293
	User: zhuangsongyu
	Language: C++
	Result: Wrong Answer
****************************************************************/