n = int(input())
a, b, c = map(int, input().split())

d = max(a*10, b*6, c*3)
q, r = divmod(n, 30)
ans = d * q

tmp = 0
for i in range(10):
    if i*3 > r:
        break
    for j in range(6):
        if i*3+j*5 > r:
            break
        for k in range(3):
            if i*3+j*5+k*10 <= r:
                tmp = max(tmp, i*a+j*b+k*c)
print(ans+tmp)