a = int(input())
b = int(input())
if a>b:
    if (a-b)%2==0:
        print("Ly A sang ly B ", (a-b)//2, " ml")
    else:
        print("Ly A sang ly B ", (a-b)/2, " ml")
elif a<b:
    if (b-a)%2==0:
        print("Ly B sang ly A ", (b-a)//2, " ml")
    else:
        print("Ly B sang ly A ", (b-a)/2, " ml")
else:
    print(0)