Evaluations in piscine

I'm doing the piscine at 42 Luanda and I'm confused about how to evaluate other's people's projects. In the tutorial about how to evaluate someone the girl said that if one exercise doesn't work the others should not be considered. But, does it mean that if someone made 9 exercises and ex03 was wrong I should put all the remaining exercises as also incorrect?

I'd be so thankful if someone could give an insight