You are given two integers a and m. Calculate the number of integers x such that 0 ≤ x < m and \gcd(a, m) = \gcd(a + x, m).

Note: \gcd(a, b) is the greatest common divisor of a and b.

Input

The first line contains the single integer T (1 ≤ T ≤ 50) — the number of test cases.

Next T lines contain test cases — one per line. Each line contains two integers a and m (1 ≤ a < m ≤ 10^{10}).

Output

Print T integers — one per test case. For each test case print the number of appropriate x-s.

Example

Input


3
4 9
5 10
42 9999999967


Output


6
1
9999999966

Note

In the first test case appropriate x-s are [0, 1, 3, 4, 6, 7].

In the second test case the only appropriate x is 0.
from math import gcd
def euler_phi(n):
  res = n
  for x in range(2, int(n**.5)+1):
    if n % x == 0:
      res = res // x * (x-1)
      while n % x == 0:
        n //= x
  if n != 1:
    res = res // n * (n-1)
  return res

t = int(input())
for _ in range(t):
    a,m = map(int,input().split())
    m = m//gcd(a,m)
    print(euler_phi(m))