A,B=map(int,input().split())
T=A+B
K=A*B

for i in range(50):
    
    if K>T:
        if K%T==0:
            print(T)
            exit()
        else:
            K=K%T
    else:
        if T%K==0:
            print(K)
            exit()
        else:
            T=T%K

for i in range(min(T,K)):
    if T%(min(T,K)-i)==0 and K%(min(T,K)-i)==0:
        print(min(T,K)-i)
        break