#include<bits/stdc++.h> using namespace std; int n,a,sum=0; int main(){ string s; long long n; cin>>s; while((s.size()%3!=0)){ s='0'+s; } int l=s.size()-1; for(int i=1;i<=l-2;i=i+3){ n=(s[i]-'0')*4+(s[i-1]-'0')*2+(s[i-2]-'0')*1; cout<<n; } return 0; }