N=int(input())
for i in range(N):
    A,B=map(int,input().split())
    L=0;R=10**5
    while R-L>1:
        M=(R+L)//2
        ok=1
        if M*M<A+B:
            ok=0
        tmp=M*M-(A+B)
        if 4*A*B>=tmp*tmp:
            ok=0
        if ok:R=M
        else:L=M
    print(R)