746 B | 746 chars
import sys
from math import sqrt, pi, sin, factorial, ceil, floor
from datetime import datetime, timedelta
BLANK = " "
# inp = input
inp = lambda : sys.stdin.readline()[:-1].strip()
mii = lambda x = BLANK : [*map(int,inp().split(x))]
mfi = lambda x = BLANK : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def solve():
n = ii()
l = [ii() for _ in range(n)][::-1]
mn = l[0]
crt = l[0]
d = []
for i in range(1, n):
if crt <= l[i]:
crt = l[i]
else:
d.append([mn, crt])
mn = l[i]
crt = l[i]
d.append([mn, crt])
s = 100
for a, b in d:
s *= b / a
p(s)
if __name__ == "__main__":
tc = 1
for t in range(1, tc+1):
ret = solve()