text = input()

text = text.split(' ')

output = ''

i = 1

kk = '1'

number = 0

for k in range(len(text) - 1):

if kk == '0':

    for j in range(int(text[i])):output = output + '1'
    kk = '1'
    
else:

    for j in range(int(text[i])):output = 
    output + '0'
    
    kk = '0'
    
i += 1

l = '' list_1 = []

for i in output:list_1.append(i)

for i in range(int(text[0])):list_1.insert(i*8, '\n')

for i in list_1:l = l + i

print(l)