def factorial(num):
    if num == 1:
        return 1
    else:
        return num * factorial(num-1)

N = int(input())
if N >= 60:
    ans = '0'*12
else:
    ans = factorial(N)
    if ans >= 10**12:
        ans = ''.join(list(str(ans))[-12:len(str(ans))])
print(ans)