nums = [5, 12, 7, 9, 21, 7, 14]
aa = nums.count(7)
print("11:",aa)
if 99 not in nums:
nums.append(99)
print("33",nums)
bnVtcyA9IFs1LCAxMiwgNywgOSwgMjEsIDcsIDE0XQphYSA9IG51bXMuY291bnQoNykKcHJpbnQoIjExOiIsYWEpCmlmIDk5IG5vdCBpbiBudW1zOgoJbnVtcy5hcHBlbmQoOTkpCnByaW50KCIzMyIsbnVtcyk=
bnVtcyA9IFs1LCAxMiwgNywgOSwgMjEsIDcsIDE0XQphYSA9IG51bXMuY291bnQoNykKcHJpbnQoJnF1b3Q7MTE6JnF1b3Q7LGFhKQppZiA5OSBub3QgaW4gbnVtczoKCW51bXMuYXBwZW5kKDk5KQpwcmludCgmcXVvdDszMyZxdW90OyxudW1zKQ==
nums = [5, 12, 7, 9, 21, 7, 14]
aa = nums.count(7)
print("11:",aa)
if 99 not in nums:
nums.append(99)
print("33",nums)