GlobeX Cup '18 J3 - Good Numbers

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Points: 5 (partial)
Time limit: 1.0s
Memory limit: 64M

Authors:
Problem type

Jonathan is writing a problem for the GlobeX Canada Cup. However, he lost his ideas for the first 3 problems of the junior division. So, Jonathan is making a problem about the numbers he loves the most: prime numbers. A good number is defined as an integer such that it is prime, and the sum of its digits is also prime. A number p is prime if it only has two divisors, 1 and itself (p).

Given a list of N integers, find out how many of them are good numbers.

Input Specification

The first line will contain the integer N\ (1 \le N \le 5\ 000), the number of integers to test.

The next N lines will each contain an integer, x\ (1 \le x \le 10^5), the integer to test.

Output Specification

On the first line, output one integer, the number of good numbers in the list.

Constraints

Subtask 1 [30%]

x \le 100

Subtask 2 [70%]

No further constraints.

Sample Input

3
3
23
51

Sample Output

2

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