#include<bits/stdc++.h>
using namespace std;
int main(){
	string s,s1;
	cin>>s;
	if(s.size()%3==1)  s="00"+s;
	else if(s.size()%3==2)  s="0"+s;
	for(int i=0;i<s.size();i=i+3){
		s1=s.substr(i,3);
		cout<<(s1[0]-'0')*4+(s1[1]-'0')*2+(s1[2]-'0')*1;
	}

	return 0;
}

/**************************************************************
	Problem: 1293
	User: huxuanchen
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2076 kb
****************************************************************/