#include<bits/stdc++.h>
using namespace std;
string s,t;
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: fzy001
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/