a,b = map(int,input().split())
d = {}
for i in range(1,a+1):
for j in range(1,b+1):
try:
d[i+j]+=1
except:
d[i+j] = 1
M = max(d.values())
d = sorted(list(d.items()),key = lambda t:t[0])
for i in d:
if i[1] == M:
print(i[0])