The sample test case for the problem BLIND LOVE is wrong. The answer should be 2.
This question is copied from here. They couldn’t even properly copy the questions. Also the problem MATHS LOVE initially had wrong tester solution and later all the submissions were rejudged. Most of the problems in this contest are copied from Atcoder and various other sites.
What is the point of having such contests. These types of contests deteriorate the quality of Codechef. Because of these contest Indian Coding Community is frowned upon by others.