Help for ELOMAX

https://www.codechef.com/viewsolution/37240579
can someone give me a counter case where my code fails ?
I’m simply finding the score of each player after the ith round and maintaining 4 arrays separately for bestrank so far , bestrating so far, and month number for bestrating and bestrank.
I guess my method is simple brute force with simple implementation, am i somewhere missing something ?