print("***样例***")
flag=True
for i in range(2):
    flag1=(i==1)
    if i==1 and flag1 or i==0 and not flag1:
        print("甲是%d"%i)
        flag=False
if flag:
    print("甲不是01城人")

print("***练习***")
__________
for i in range(2):
    flag1=__________
    if __________ or __________:
        print("甲是%d"%i)
        __________
if __________:
    print("甲不是01城人")