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PRIMEN1 - Sieve Of Erasthosthenes |
Heard of a procedure called sieve of Eratosthenes? Well, implement this:
- Fill an array num[n] (where 0 ≤ n ≤ 1000) with numbers from 1 to n.
- Starting with the second entry in the array, set all its multiples to zero.
- Proceed to the next non-zero element and set all its multiples to zero.
- Repeat step 3 till u have set up the multiples of all the non-zero elements to zero.
- At the conclusion of step 4, all the non-zero entries left in the array would be... (obviously) prime numbers, so print out these numbers.
Input
First line consists of number of test cases t (0 ≤ t ≤ 100). The next lines refers to the values of n (0 ≤ n ≤ 1000).
Output
The number of prime numbers up to n with output of each test case separated by a extra line.
Example
Input: 2 5 10 Output: 1 2 3 5 1 2 3 5 7
Added by: | kousik |
Date: | 2013-09-14 |
Time limit: | 5s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |