20221110

# n=int(input())
# a=input().split()
#
# max=100
# for i in range(n):
#     a[i] = int(a[i])
#     if max>a[i]:
#         max=a[i]
# print(max)
#
# n = int(input())
# x = input().split()
#
# for i in range(len(x)):
#     x[i] = int(x[i])
#
# x.sort()
# # print(x[0])
# max = -1000000
# min = 1000000
# for i in range(5):
#     a=int(input())
#     a = int(a)
#     if max<a:
#         max=a
#     if min>a:
#         min=a
# print(max)
# print(min)
a,b=map(int,input().split())

for i in range(a,b+1):
    if i%2==0: