/run python
class ぺぇ:
def __init__(self, value = 0):
self.value = value
def __add__(self, other):
self.value += other
print("{}ぺぇ".format(self.value))
return self
def __sub__(self, other):
self.value -= other
print("{}ぺぇ".format(self.value))
return self
pe = ぺぇ()
pe += 1 # 1ぺぇ
pe += 3 # 4ぺぇ
pe -= 2 # 2ぺぇ