spoj#MATNUM. Divisibility Test
Divisibility Test
Problem statement is simple and straight forward . You will be given a non-negative integer P of length N and you need to check whether it's divisible by Q ?
Integer P will be given in its decimal representation with P0 as leftmost digit and P1 as second digit from left !
Rest of the digit can be generated from the formula :
Pi = ( 4*Pi-1 + Pi-2 ) modulo Q for 2 <= i <= N-1
Input
The first line contains one integer T - denoting the number of test cases.
T lines follow each containing four integers P0 , P1 , Q and N !
Output
For each testcase output YES if the corresponding integer is divisible by Q and NO otherwise.
Constraints
- T <= 100000
- 0 < P0 , P1 , Q < 10
- 0 < N <= 1018
Example
Input: 4 1 4 2 2 1 4 2 1 4 2 3 2 3 4 7 3</p>Output: YES NO YES NO
Explanation
Value of P is 14, 1, 42, 345 in respective cases !