#include<bits/stdc++.h>
using namespace std;
string t,s; 
int c;
int main(){
	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){
	t=s.substr(i,3);
	c=(t[0]-'0')*4+(t[1]-'0')*2+(t[2]-'0')*1;
	cout<<c;}

    return 0;
}

/**************************************************************
	Problem: 1293
	User: zhangailin
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2076 kb
****************************************************************/