230111

# x = int(input())
# for i in range(1, x+1):
#     if x%i==0:
#         print(i, end=' ')


# x = int(input())
# s = 0
# for i in range(2, x):
#     if x%i==0:
#         s = 1
# if s == 0:
#     print('prime')
# else:
#     print('not prime')


# x, y = input().split()
# x = int(x)
# y = int(y)
# print(x**y)


# x, y = input().split()
# x = int(x)
# y = int(y)
# s = 1
# for i in range(y):
#     s *= x
# print(s)


# x = input()
# x = int(x)
# s = 1
# for i in range(1, x+1):
#      s *= i
# print(s)

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


# n = int(input())
# for i in range(n):
#     for j in range(n):
#         print(i,',',j,end='\t')
#         # if ~~~~:
#         #     print('*', end='')
#         # else:
#         #     print(' ', end='')
#     print()


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


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