from torch import nn
import torch


class Add(nn.Module):

    def forward(self, inputs):
        return torch.add(*inputs)


class Multiply(nn.Module):

    def forward(self, inputs):
        return torch.mul(*inputs)


class Cat(nn.Module):

    def forward(self, inputs, dim):
        self.__setattr__('dim', dim)
        return torch.cat(inputs, dim)