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  1. class ModIntegerMeta(type):
  2.     def __new__(metacls, name, bases, members):
  3.         cls = super().__new__(metacls, name, bases, members)
  4.         for name in '__add__', '__sub__', '__mul__', '__neg__', '__repr__':
  5.             setattr(cls, name, cls.create_method(name))
  6.         return cls
  7.  
  8.     def create_method(cls, name):
  9.         def method(self, *args):
  10.             value = getattr(self.value, name)(*(
  11.                 arg.value if isinstance(arg, cls) else arg for arg in args
  12.             ))
  13.             if type(value) is int:
  14.                 return cls(value, self.mod)
  15.             return value
  16.         return method
  17.  
  18. class ModInteger(metaclass=ModIntegerMeta):
  19.     def __init__(self, value, mod):
  20.         self.mod = mod
  21.         self.value = value % mod
  22.  
  23. print((-ModInteger(66, 100) + ModInteger(39, 100) * 5))
Success #stdin #stdout 0.1s 14132KB
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https://ideone.com/m5upVv
language:
Python 3 (python  3.12)
created:
9 days ago
visibility:
secret

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