import sys
import numpy as np
import itertools

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

a, b, c, d, e = map(int, read().split())

A = np.array([
    [1,0,0,0,0],
    [0,1,0,0,0],
    [0,0,1,0,0],
    [0,0,0,1,0],
    [0,0,0,0,1],
    [1,1,0,0,1],
    [1,1,1,0,0],
    [0,1,1,1,0],
    [0,0,1,1,1],
    [1,0,0,1,1],
], np.int64)
v = np.array([0,0,0,0,0,a,b,c,d,e])

cand = []
for s in itertools.combinations(range(10), 5):
    A1 = np.concatenate([A[i] for i in s]).reshape(5,5)
    v1 = np.array([v[i] for i in s])
    D = np.linalg.det(A1)
    if D == 0.0:
        continue
    x = np.linalg.solve(A1, v1)
    if np.any(x < -2):
        continue
    cand.append(x.astype(np.int64))

ans = 0
nums = (a,b,c,d,e)
for x in cand:
    for eps in itertools.product(range(-1,2), repeat=5):
        y = x + np.array(eps)
        if np.any(y < 0):
            continue
        ok = True
        for i in range(5):
            if y[i] + y[(i-1)%5] + y[(i+1)%5] > nums[i]:
                ok = False
                break
        if ok:
            ans = max(ans, y.sum())
print(ans)