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
ysn:
2016-05-02 15:04:45
@Sarthak Munshi 9 is a perfect square not a cube number. you are confusing addition with multiplication. 3+3+3=9 is not a cube number but 3*3*3=27 is a cube number.
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Sarthak Munshi:
2016-05-02 12:09:30
How can 18 be a cube free number ? 9 is a divisor of 18 and it is a cube . |
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ysn:
2016-04-12 13:38:29
@Muhammad Ridowan i wrote a code that doesnt even use a loop. but still i am getting TimeLimit exceeded. Why?
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ALi Ibrahim:
2016-04-10 22:26:35
My 50th on Spoj :D |
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pvsmpraveen:
2016-01-29 20:03:39
Cutest lowerbound ever |
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aakash_s:
2016-01-07 20:19:24
The same code in my compiler gave memory overflow ...when i realized there was none other option....i submitted and AC 0.03s |
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sy_117:
2015-10-23 20:41:23
Nice ques. learnt somthing new !!!!!
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prakash_reddy:
2015-10-05 19:33:38
My 100th on Spoj.... prime factorization roxxxxxxxx.... :) |
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Durgesh Deep:
2015-10-04 20:47:54
Everyone take care about space after : |
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biggydbs:
2015-09-29 15:45:23
getting wrong answer by applying simple logic subtracting number of cubes till a given number from n and printing result ?? Last edit: 2015-09-29 15:46:05 |
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 |