tnrwp

a = int(input())

list = [[i+j*a+1 for i in range(a)] for j in range(a)]

for i in range(a) :

for j in range(a) :

print(list[i][j],end=' ')

print()

list = [[i+j*a+1 for i in range(a-1,-1,-1)] for j in range(a)]

for i in range(a) :

for j in range(a) :

print(list[i][j],end=' ')

print()