Can mcdonalds make you gain a lot of weight?

I'm trying to gain weight I'm 16, 5'3 and weigh about 97 lbs , I wanna be at least 115, is eating mc Donald's for breakfast lunch and dinner the fastest way to gain weight I also have a protein shake that adds on 1000 calories, I know it's unhealthy but I have to put on weight quick, so I can I just eat McDonalds for a couple of weeks?