Hello every can anybody tell me what is the differences between typedef and #define which one is better and when should i use them and when should i don't.

Hello every one :) Today I saw an interesting thing this code 36189750 got accepted for the problem A — Cut Ribbon while this code 36189530 did not. so im wondering what is the difference between memset and fill can anybody explain it to me. because they really look like the same thing to me so I would be grateful if some one tells the difference. Thank you for your help. UPD: also sorry for my bad English typing this is my first blog entries.