EASYMATH  EASY MATH
You will be given 4 numbers
n m a d
find count of numbers between n & m (inclusive) not divisible by (a) or (a+d) or (a+2d) or (a+3d) or (a+4d).
Input
first line has number t  number of test cases.
each test case has 4 numbers n m a d
Output
Single line having single number giving the count
Example
Input: 3
1 10 2 2
20 100 3 3
100 1000 4 5 Output:
5
54
543
NOTE  1<=n<=m<= 2^32
1<=a<= 2^32
1<=d<=2^32
2<=t<=100
ALSO TRY THR CHALLENGE VERSION  /http://www.spoj.com/problems/EASYMATC/
hide comments
pvkcse:
20140517 12:28:17
Any tricky case please...getting o/p in ideone but here it is WA... http://ideone.com/spdZlb 

785227:
20140221 16:50:43
Please check my submission ID 11100462


pranjuldb:
20130730 18:43:15
nice question... :) 

Aayush Agarwal:
20130601 15:24:21
@DEVIL D : the answer for the first test case should be 10 because it is said which are not divisible by a or a+d or a+2d.... so numbers upto 9 are not divisible by 10 and 10 is not divisible by 6 or 8 or 4.. so every number is counted in this manner. Last edit: 20130601 15:25:22 

Saurabh Jain:
20120729 13:04:43
@Devil D: i have checked a lot of test cases correctly on my system but here i'm getting WA.... could you please tell me reason for the same or test case for which my algo fails? 

Abhishek Mishra:
20120701 05:51:45
i think there is no test case for any extreme one..;) 

Better late than never !!!:
20120605 04:22:24
It's not at all easy :O 

Ravi kishore :
20120601 14:43:33
Nice problem!


Carlos Aponte:
20120525 16:31:35
May anyone help me see the error in my answer 6936482


Aman Kumar:
20120510 11:32:42
inclusion exclusion :) 
Added by:  Devil D 
Date:  20120417 
Time limit:  0.100s1s 
Source limit:  20000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ASM64 
Resource:  Own 