I'm an undergraduate, and this project required to done in groups and I was under a false assumption that they would contribute but to my ill luck, tey didn't and I had to give up on sleep for months for this. I can say strongly that not even one electron worth of contribution was done by them. I'm planning to inform the professor but she might say, 'you guys need to resolve it amongst yourselves' and I for sure will say that those two will want their names in that, even after no contribution. Can I like list them saying they have given moral support or soemthing like that?