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FIBOFUN - Fun with Fibonacci Series |
Fibonacci series is a series in which every element is sum of previous 2 elements.
first 2elements are 0,1 and the series goes like 0,1,1,2,3,5,8,13 ........
What if you were given 2 random numbers as the starting of the series and u follow the same rule as the fibonacci rule.
for eg. if you were given 2 and 2 .. the series would become
2 2 4 6 10 16 26 .........
Now ur task is Simple ...
You will be given 2 numbers a & b .. the first and second term of the series..
you need to calculate the sum of first n numbers of the series so formed..
Since the numbers can be big you need to print the result mod some number 'M' provided in the input.
Input
first line will have single number 't' - number of test cases.
each test case will have 4 numbers a,b,n & M
a- first number of the series
b- second number of the series
n- calculate the sum till n numbers
M- print the result mod M
Output
single number for each case - sum of n terms mod M
Example
Input: 2
2 2 10 21
1 3 10 21
Output: 13
4
Explanation - for first case series is 2 2 4 6 10 16 26 42 68 110 .. Sum is 286.. o/p = 286%21 = 13NOTE -
Number of test cases <=100.
0 <= a,b,m <= 10^81 <= n <= 10^8actually n ranges from 1 to 10^8
Added by: | Devil D |
Date: | 2012-03-15 |
Time limit: | 1s |
Source limit: | 10000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
Resource: | Own |
hide comments
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2012-08-28 08:29:04 Prakhar Jain
m is never 0..!!! Last edit: 2012-03-30 11:46:23 |
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2012-08-28 08:29:04 Andy
how to calculate if m=0 ? my submission 6696276 is giving WA, but I can't find a test case where it fails Last edit: 2012-03-21 10:26:22 |
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2012-08-28 08:29:04 Aman Kumar
@thanx Bruno..:) |
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2012-08-28 08:29:04 Bruno Adami
got acc! check the forums for some sample input :) Last edit: 2012-03-18 22:29:25 |
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2012-08-28 08:29:04 Pobut
There is something weird going on with some test cases... :) |
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2012-08-28 08:29:04 spock
@pranay give some test cases. |
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2012-08-28 08:29:04 ginnipkj
@ Deepak S OR @Devil D ---- plz check why my submission ID 6671946 is getting WA |
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2012-08-28 08:29:04 Pranay
nice problem :) Last edit: 2012-03-17 11:16:51 |
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2012-08-28 08:29:04 spock
please give some difficult test cases |
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2012-08-28 08:29:04 spock
Why am i getting the WA??..please check my submission id 6666736.. |