20250413

# n = int(input())## data = []# for i in range(n):#     v = [0] * n#     data.append(v)## data[1][0] = 10## for i in range(n):#     for j in range(n):#         print(data[i][j], end=' ')#     print()# n = int(input())# a = []# for i in range(n):#     x = [int(input())] * n#     a.append(x)### for i in range(n-1):#     for j in range(n-1):#         a[i+1][j+1]=a[i+1][j]-a[i][j]## for i in range(n):#     for j in range(i+1):#         print(a[i][j], end= ' ')#     print("")# a = []# c = 0# for i in range(10):#     x = list(map(int,input().split()))#     a.append(x)# y = list(map(int,input().split()))# for j in range(10):#     if y[j]==1:#         print(j+1,end= " ")#         for i in range(10):#             if a[9-i][j] == 0:#                 pass#             elif a[9-i][j] < 0:#                 print("fall")#                 c = c + 1#                 break#             elif a[9-i][j] > 0:#                 print("crash")#                 c = c + 1#                 break#         if c == 0:#             print("safe")#         c = 0# n = int(input())# a = []# for i in range(n):#     for j in range(n):#         v = [0] * n#         a.append(v)# x = 0# y = n//2# k = 1# a[x][y] = k# k += 1# for i in range(n*n-1):#     if k % n != 1:#         x -= 1#         y += 1#         if x < 0:#             x = n-1#         if y > n-1:#             y = 0#     else:#         x += 1#     a[x][y] = k#     k += 1# for i in range(n):#     for j in range(n):#         print(a[i][j],end= " ")#     print()n = int(input())x = 0y = 0k = 1a = []c = 2(n-1)for i in range(n):    for j in range(n):        v = [0] * n        a.append(v)b = n - 1for i in range(n**2):    if c <= 0:        x -= 1        c = 2(n-1)-2    else:        x += 1        c -= 1    if b <= 0:        a[y][x] = k        b = n -1    else:        b -= 1        a[x][y] = k    k += 1print(a)