######## if ########
#== ! != < > <= >= and or not in true false
'''
a = 1
b = 2
if a == b:
print("不成立")
if : else:
if: elseif: else:
'''
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######## if ########
#== ! != < > <= >= and or not in true false
'''
a = 1
b = 2
if a == b:
print("不成立")
if : else:
if: elseif: else:
'''