#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cstdio>
#include <math.h>
#include <string>
#include <algorithm>
using namespace std;
int k1, k2, k3, k4;
int ans;
int main() {
scanf("%d %d %d %d", &k1, &k2, &k3, &k4);
int l = min(k4, min(k1, k3));
ans += (l * 256);
k4 -= l;
k1 -= l;
k3 -= l;
int k = min(k1, k2);
ans += (k * 32);
printf("%d\n", ans);
return 0;
}