def sqrt_by_newton(k, epsilon=0.00001):
  def f(x): return x - (x * x - k) / (2.0 * x)
  if k <= epsilon:
    return 0.0
  x = k
  next_x = f(x)
  while abs(x - next_x) >= epsilon:
    x = next_x
    next_x = f(x)
  return next_x

N = int(input())
for i in range(N):
  a, b = map(int, input().split())
  m = sqrt_by_newton(a)
  n = sqrt_by_newton(b)
  print(int(m + n) + 1)