#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: linyuhang
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2076 kb
****************************************************************/