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def zero(cnt=1):
    print('0'*cnt,end='')

def one(cnt=1):
    print('1'*cnt,end='')

for row in range(100):
    if row==0:
        zero()
        one(99)
    elif row==1:
        one()
        zero(99)
    elif row%2 == 0:
        one(99)
        zero()
    else:
        one()
        zero(99)
    print()