#include<bits/stdc++.h>
using namespace std;
#define int long long
#define REP(i,m,n) for(int i=(m);i<(n);i++)
#define rep(i,n) REP(i,0,n)
#define pb push_back
#define all(a) a.begin(),a.end()
#define rall(c) (c).rbegin(),(c).rend()
#define mp make_pair
#define endl '\n'
#define vec vector<ll>
#define mat vector<vector<ll> >
#define fi first
#define se second
typedef long long ll;
typedef pair<ll,ll> pll;
typedef long double ld;
const ll inf=1e9+7;
const ll mod=998244353;
signed main(){
    vector<ll>a(10);
    rep(i,5)cin>>a[i];
    REP(i,5,10){
        a[i]=a[i-5];
    }
    a.pb(a[0]);
    ll ans=0;
    rep(i,5){
        vector<ll>b(11);
        ll cnt=0;
        rep(i,11){
            b[i]=a[i];
        }
        REP(j,i,i+5){
            ll mi=b[j];
            mi=min(mi,b[j+1]);
            mi=min(mi,b[j+2]);
            cnt+=mi;
            if(j+5<11)b[j+5]-=mi;
            b[j+1]-=mi;
            b[j+2]-=mi;
            if(j==i){
                b[j+6]-=mi;
            }
        }
        ans=max(ans,cnt);
    }
    cout<<ans<<endl;
}