n = int(input())
a = list(map(int,input().split()))
lis = [0]*n
for i in range(n-1):
    if a[i] > a[i+1]:
        lis[i] = -1
b = a[::-1]
for i in range(n-1):
    if b[i] < b[i+1]:
        lis[i] = 1
lis[-1] = -1
m = 1000
k = 0
for i in range(n):
    if lis[i] == 1:
        k += m//a[i]
        m = m%a[i]
    elif lis[i] == -1:
        m += k*a[i]
        k = 0
print(m)