I given the contest and my rating decreases from 1421 to 1381... \ni recently started giving contest on leetcode , so please let me know  how it actually works?\nMy rating start decreases as i m able to solve few question on leetcode.\n\nI feel rating should increase but why it is decreasing?\nIncrease of rating is good or decrease of rating?

I given the contest and my rating decreases from 1421 to 1381... \ni recently started giving contest on leetcode , so please let me know  how it actually works?