题解 | #蛇形矩阵#

ent = int(input())
s = 0
for i in range(1,ent+1):
    s += i
o = []
for i in range(s, 0, -1):
    o.append(i)
X = []
for i in range(ent, 0, -1):
    l = o[:i]
    del o[:i]
    X.append(l)
o_array = []
for j in range(ent):
    l = []
    for i in range(len(X[j])):
        l.insert(0, X[i][j])
    o_array.append(l)
    
for i in range(ent):
    for j in range(len(o_array[i])):
        print(o_array[i][j],end=' ')
    print()