#pragma comment(linker, "/STACK:1024000000,1024000000")#include<cstdio>#include<cstring>#include<cmath>#include<algorithm>#include<vector>#include<map>#include<set>#include<queue>#include<stack>#include<ctime>#include<iostream>using namespace std;typedef long long LL;const double pi=acos(-1.0);void File(){    freopen("D:\\in.txt","r",stdin);    freopen("D:\\out.txt","w",stdout);}template <class T>inline void read(T &x){    char c = getchar();    x = 0;    while(!isdigit(c)) c = getchar();    while(isdigit(c))    {        x = x * 10 + c - ‘0‘;        c = getchar();    }}char s[100010];long long k2,k3,k5,k6;int main(){    cin>>k2>>k3>>k5>>k6;    long long mn=min(k2,min(k5,k6));    long long ans=mn*256;    k2-=mn;    k5-=mn;    k6-=mn;    ans+=min(k2,k3)*32;    cout<<ans<<endl;    return 0;}