20221027

# n=int(input())
# sum=0
# for i in range(1,n+1):
#     for j in range(1,i+ 1):
#         sum+=j
#
# print(sum)
# n=int(input())
# for i in range(1,7):
#     for j in range(1,7):
#         if  i+j==n:
#             print(i,j)