2831: 画矩形

解题思路:

注意事项:

参考代码:

l = list(input().split())

a = int(l[0])

b = int(l[1])

if l[3] == '0':

    print(b*l[2])

    for i in range(a-2):

        print(l[2] + " "*(b-2) + l[2])

    print(b*l[2])

else:

    for i in range(a):

        print(b*l[2])