Some questions about the network setting

[HelloWorldLTY]

Sorry to disturb you, I have a small question about the setting for the network.

Why you use 12/24 network units for the output, rather than nn.Linear(x, 12/24)? Thanks

For example:
class Net12(nn.Module):
def init(self):
super(Net, self).init()
self.fc1 = nn.Linear(12611, 1000)
self.fc3 = nn.Linear(1000, 128)
self.fc40 = nn.Linear(128, 64)
self.fc50 = nn.Linear(64, 1)
self.fc41 = nn.Linear(128, 64)
self.fc51 = nn.Linear(64, 1)
self.fc42 = nn.Linear(128, 64)
self.fc52 = nn.Linear(64, 1)
self.fc43 = nn.Linear(128, 64)
self.fc53 = nn.Linear(64, 1)
self.fc44 = nn.Linear(128, 64)
self.fc54 = nn.Linear(64, 1)
self.fc45 = nn.Linear(128, 64)
self.fc55 = nn.Linear(64, 1)
self.fc46 = nn.Linear(128, 64)
self.fc56 = nn.Linear(64, 1)
self.fc47 = nn.Linear(128, 64)
self.fc57 = nn.Linear(64, 1)
self.fc48 = nn.Linear(128, 64)
self.fc58 = nn.Linear(64, 1)
self.fc49 = nn.Linear(128, 64)
self.fc59 = nn.Linear(64, 1)
self.fc410 = nn.Linear(128, 64)
self.fc510 = nn.Linear(64, 1)
self.fc411 = nn.Linear(128, 64)
self.fc511 = nn.Linear(64, 1)
may be nn.Linear(64,12/24)? Thanks.