Is the R3D model based on resnet-18 with the basic building block?

[rambleramble]

Thanks for the great work!
Is the R3D model based on resnet-18 with the "basic building block"? It seems so, but want to confirm if it is the exactly same implementation.

"the basic building block" I meant is as Figure 5 Left shows in the original resnet paper:
https://arxiv.org/pdf/1512.03385.pdf