Modify the previous program to find every prime number less than or equal to n. Measure how many seconds it takes to run this program. Run this program on STU.ipv6.club.tw, and compare the running time with your classmates.
The algorithm may look like:
The program may run as follows.

Find every prime number less than or equal to N.
Please input a positive number -- 100
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
It takes 0.00011 seconds to find these prime numbers.