Help the president

Today Chef got elected as the president of chefland. to celebrate this he decided to gift t-shirts with his name written on it to the citizens of chefland. so he asked them to fill a form to get to know their t-shirt size. after collecting the size data of the $N$ citizens, he ordered the same to a t-shirt making factory but on delivery, he finds that some of the t-shirts received do not match wi