CUBEFR  Cube Free Numbers
A cube free number is a number who’s none of the divisor is a cube number (A cube number is a cube of a integer like 8 (2 * 2 * 2) , 27 (3 * 3 * 3) ). So cube free numbers are 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18 etc (we will consider 1 as cube free). 8, 16, 24, 27, 32 etc are not cube free number. So the position of 1 among the cube free numbers is 1, position of 2 is 2, 3 is 3 and position of 10 is 9. Given a positive number you have to say if its a cube free number and if yes then tell its position among cube free numbers.
Input
First line of the test case will be the number of test case T (1 <= T <= 100000) . Then T lines follows. On each line you will find a integer number n (1 <= n <= 1000000).
Output
For each input line, print a line containing “Case I: ”, where I is the test case number. Then if it is not a cube free number then print “Not Cube Free”. Otherwise print its position among the cube free numbers.
Example
Sample Input: 10 1 2 3 4 5 6 7 8 9 10 Sample Output: Case 1: 1 Case 2: 2 Case 3: 3 Case 4: 4 Case 5: 5 Case 6: 6 Case 7: 7 Case 8: Not Cube Free Case 9: 8 Case 10: 9
hide comments
sk128:
20210803 17:53:38
generating all prime numbers less than or equal to 101 will be sufficient . Last edit: 20210803 19:33:56 

sankalp_7:
20210624 17:36:02
Modified Sieve :D 

nothuman_1:
20210219 15:38:19
Nice ,Ac in 1 go 

onkar_telange:
20201003 18:11:36
Note that we have to print test case number not input n after case 

fukrey:
20200814 06:04:25
i don't know why spoj is not accepting same logic in java but if i use cpp or c it will be accepted. 

harry_shit:
20200520 15:45:36
it'll be safer to take array size 1000100 

apoorva222g:
20200420 14:26:17
precomputation with modified sieve 

fighter_4:
20200415 06:33:04
Sieve and precomputation will work ,AC in one go :D 

monkscoder:
20200120 11:30:05
Take care of formatting... costed me 2 WA 

sayan_244:
20200118 13:19:11
pair+sieve works 
Added by:  Muhammad Ridowan 
Date:  20110614 
Time limit:  0.100s1s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ASM64 
Resource:  Own. For alternate thanks Sayef Azad Sakin 