a,b = map(int,input().split())
lists = []
if a <= b:
    Max = b
    Min = a
else:
    Max = a
    Min = b
for i in range(a+b+1):
    if i % 2 == 0:
        if Max != 0:
            lists.append("A")
            Max -= 1
    else:
        if  Min != 0:
            lists.append("B")
            Min -= 1
cnt = 0
for i in range(1,len(lists)):
    if lists[i] != lists[i-1]:
        cnt += 1
print(cnt)