#1112. Divisible Numbers
Divisible Numbers
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Background
Special for beginners, ^_^
Description
You are given 4 positive integers a, b, c, d with a<c and b<d. Find any pair of numbers x and y that satisfies the following conditions:
- a<x≤c, b<y≤d,
- x⋅y is divisible by a⋅b.
Note that required x and y may not exist.
Format
Input
The first line of the input contains a single integer t (1≤t≤10), the number of test cases.
The descriptions of the test cases follow.
The only line of each test case contains four integers a, b, c and d (1≤a<c≤109, 1≤b<d≤109).
Output
For each test case print a pair of numbers a<x≤c and b<y≤d such that x⋅y is divisible by a⋅b. If there are multiple answers, print the anyone of them. If there is no such pair of numbers, then print -1 -1.
Samples
10
1 1 2 2
3 4 5 7
8 9 15 18
12 21 14 24
36 60 48 66
1024 729 373248 730
1024 729 373247 730
5040 40320 40319 1000000000
999999999 999999999 1000000000 1000000000
268435456 268435456 1000000000 1000000000
2 2
4 6
12 12
-1 -1
-1 -1
373248 730
-1 -1
15120 53760
-1 -1
536870912 536870912
Limitation
1s, 1024KiB for each test case.