#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,c,x,y,z;
    cin>>n;
    z=n/1000*512;
    n=n%1000;
    y=n/100*64;
    n=n%100;
    c=n/10*8;
    x=n%10;
    n=c+x+y+z;
    cout<<n;
    return 0;
}