n = int(input())
for i in range(n):
    c = input().split()
    a = int(c[0])
    b = int(c[1])
    ok = a + b
    ng = 0
    while ok - ng > 1:
        mid = (ok + ng) // 2
        if mid * mid * mid * mid - 2 * mid * mid * a - 2 * mid * mid * b + a * a + b * b - 2 * a * b > 0:
            ok = mid
        else:
            ng = mid
    print(ok)