230114

# 6077,6080

# a = int(input())
# b = 0
# for i in range(a+1):
#     if i%2==0:
#         b=b+i
#
# print(b)

# a,b = input().split()
# a=int(a)
# b=int(b)
# for i in range(1,a + 1):
#     for j in range(1,b+1):
#         print(i,j)

# a = int(input())
# for i in range(a):
#     for j in range(a):
#         if i==0 or i==a-1 or j==0 or j==a-1
#             print('*', end='')
#         else:
#             print(' ',end='')
#     print()

# a = int(input())
# for i in range(a):
#     for j in range(a):
#         if i==0 or i==a-1 or j==0 or j==a-1 or i==j or i==a-j-1 or j==a//2 or i==a//2:
#             print('*',end='')
#         else:
#             print(' ',end='')
#         if j==a-1:
#             print()

# n = int(input())
#
# for i in range(n):
#     for j in range(i+1):
#         print('*', end='')
#     print()

# a = int(input())
# b=a
#
# while b>=0:
#     for i in range(b):
#         print('*',end = '')
#     b=b-1
#     print()
#     for j in range(a-b):
#         print(' ',end='')

# a = int(input())
# b=a
#
# while b>=0:
#     for i in range(b):
#         print('*',end = '')
#     b=b-1
#     print()

# a = int(input())
# b=1
# while a+1!=b:
#     for i in range(b):
#         print('*',end = '')
#     b=b+1
#     print()
# a=a-1
# while a>=0:
#     for i in range(a):
#         print('*',end = '')
#     a=a-1
#     print()

# a = int(input())
# b=a
# n=0
# h=1
#
# while not(a+2==h):
#
#
#             for z in range((b//2)-n):
#                 print(' ',end='')
#             for k in range(h):
#                 print('*',end='')
#             print()
#             h=h+2
#             n=n+1
#

# x = int(input())
#
# for i in range((x//2)+1):
#     for j in range(i, (x//2)):
#         print(' ', end='')
#     for j in range((i*2-1)+2):
#         print('*', end='')
#     print()