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
vishwanath_26:
2017-10-27 16:39:53
Apply Sieve and get AC!!!
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shubham9261:
2017-08-30 16:59:10
sieve and precompute only will help u Last edit: 2017-08-30 17:12:17 |
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saurav52:
2017-08-28 18:04:07
Make ur own sieve, AC in ONE GO :) |
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jayharsh:
2017-08-12 13:51:44
AC in one Go.....! modify your sieve and get the answer....... |
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esshuvo:
2017-08-11 22:18:48
binary search+modified seive! |
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mhz2:
2017-07-17 17:21:31
Great Question! :) |
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anurag_tangri:
2017-04-21 15:36:05
many WA's and finally AC:)
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newbie_127:
2017-03-30 19:03:55
Be careful with counter !! Cost me 4 WA's . |
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nilabja16180:
2017-03-22 21:34:44
EASY! AC IN ONE GO! |
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kass_97:
2016-12-31 09:52:23
Simple sieve, AC at once
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Added by: | Muhammad Ridowan |
Date: | 2011-06-14 |
Time limit: | 0.100s-1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
Resource: | Own. For alternate thanks Sayef Azad Sakin |