题解 | 矩阵转置

n, m = map(int, input().split())

a = [[0 for _ in range(n)] for _ in range(m)]

for i in range(n):
    b = list(map(int, input().split()))
    for j in range(m):
        a[j][i] = b[j]
        
for i in range(m):
    print(*a[i])