#include <bits/stdc++.h> 
using namespace std;
using ll =long long;
#define all(v) v.begin(),v.end()
 #define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)


int main() {
  vector<ll> A(3);
  ll B;
  for(ll i=0;i<3;i++) cin>>A[i];
  cin>>B;

  cout<<max(A[2]*3,A[0]+A[1]+A[2]+B)<<endl;
}