No one definition can satisfactorily embrace all the various kinds of stories that can
此题为判断题(对,错)。
此题为判断题(对,错)。
半素数
题目定义了一种叫半素数的数:只要一个数能被分解成两个素数,那么这个数就是半素数。
Prime Number Definition
An integer greater than one is called a prime number if its only positive divisors (factors) are one and itself. For instance, 2, 11, 67, 89 are prime numbers but 8, 20, 27 are not.
Semi-Prime Number Definition
An integer greater than one is called a semi-prime number if it can be decompounded to TWO prime numbers. For example, 6 is a semi-prime number but 12 is not.
Your task is just to determinate whether a given number is a semi-prime number.
Input
There are several test cases in the input. Each case contains a single integer N (2 <= N <= 1,000,000)
Output
One line with a single integer for each case. If the number is a semi-prime number, then output "Yes", otherwise "No".
Sample Input
3
4
6
12
Sample Output
No
Yes
Yes
No
没什么好说的,解法很简单
A.statements
B.comments
C.accounts
D.definition
B、will usually cause X purchases to decrease.
C、may cause X purchases either to increase or decrease, there being no "usually" consequence.
D、by definition, neither increases nor decreases X purchases.
E、will not apply, since income-effects refer to changes in spendable income, not to price changes.
A.CA锁购买之后,直接可以使用不需要在系统中进行激活。
B.CA锁购买之后,需要激活后方可登录系统。
C.CA锁办理,可办理多把主锁
D.使用CA锁签章的时候,可以使用副锁来进行签章