It is one of my observations in the Codechef problem statements
For completing problem solver badge for 1st 50 problems in which max problems are related to increment/decrement or greater than/less than properties.
I think this should be change somewhere
Every problem less than 600 rating is like that, if you feel bored by them but are still a beginner try some 600-1000 rated problems . You also don’t have to do all the practice problems in order.