About one month ago codechef send me a letter, in which they informed me, that my code was used by some other contestant in March Challenge. They gave me links to solutions and they were similar. I don't know how anybody could get my code, i'm afraid that my account was broken because my password was too weak. I have already sent two letters to the codechef administration, but i haven't received any answer yet. I really like competitions on the Codechef, and it is really sad, that they don't pay any attention to this problem. Did anybody have the same problem?