#
# µû¶óÇÏ¸ç ¹è¿ì´Â ÆÄÀ̽ã°ú µ¥ÀÌÅÍ°úÇÐ(»ý´ÉÃâÆÇ»ç 2020)
# LAB 5-5 ¹Ýº¹À» ÀÌ¿ëÇÏ¿© ÆÑÅ丮¾óÀ» °è»êÇϱâ, 126ÂÊ
#
n = int(input("Á¤¼ö¸¦ ÀÔ·ÂÇϽÿÀ: "))
fact = 1
for i in range(1, n+1):
fact = fact * i
print(n, "!Àº", fact, "ÀÌ´Ù.")