Step-by-step explanation:
Unclear question. But I inferred this to be the clearer rendering of the text below;
Requirement
They are read from the keyboard in natural numbers. Determine the number of prime numbers formed by the last 2 digits of each number.
Input data
The input file 2prim.in contains on the first line the number n, and on the second line n natural numbers in the range [10,10000] separated by a space.
Output data
The 2prim.out output file will contain the number of numbers that have the above property.
Restrictions and clarifications
1 ≤ n ≤ 10000.