import math
from decimal import Decimal, getcontext, ROUND_CEILING

getcontext().prec = 20

n = int(input())
for _ in range(n):
    a, b = map(int, input().split())
    
    # Check if a is a perfect square
    a_root = math.isqrt(a)
    is_a_square = a_root * a_root == a
    
    # Check if b is a perfect square
    b_root = math.isqrt(b)
    is_b_square = b_root * b_root == b
    
    if is_a_square and is_b_square:
        print(a_root + b_root + 1)
    else:
        sum_sqrt = Decimal(a).sqrt() + Decimal(b).sqrt()
        x = sum_sqrt.to_integral_value(rounding=ROUND_CEILING)
        print(int(x))