题解 | #等差数列#

while True:
    try:
        num = list(map(int,input().split()))
    except:
        break
    else:
        n1,n2=num[0],num[1]
        if n1>n2:
            n1,n2 = n2,n1
        
        for i in range(n2,n1*n2+1,n2):
            if i%n1==0:
                print(i)
                break