func main()
	var n: int :: [cui@input().toInt(&), 60].min()
	var ans: int :: 1
	var f: bool :: false
	for i(1, n)
		do ans :* i
		if(ans >= 10 ^ 12)
			do f :: true
		end if
		do ans :% 10 ^ 12
	end for
	if(f)
		do cui@print("\{ans.toStrFmt("012d")}\n")
	else
		do cui@print("\{ans}\n")
	end if
end func