#include<bits/stdc++.h>
using namespace std;
string s,t;
int c; 
int main(){
	int 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');
		cout<<c;
	}
}

/**************************************************************
	Problem: 1293
	User: wangsenlin
	Language: C++
	Result: Compile Error
****************************************************************/