N = int(input())
for _ in range(N):
    a, b = map(int, input().split())
    lb = 0
    ub = 10 ** 5
    while ub - lb > 1:
        mid = (ub + lb) // 2
        if 4 * a * b < (mid * mid - a - b) ** 2:
            ub = mid
        else:
            lb = mid
    print(ub)