When I try to solve some problem and it gives "WA on test X", I try to fix the error myself and sometimes I can find what is wrong and sometimes don't. When I'm really stuck, I like to go to see which case gives wrong answer to my code instead of going to see the tutorial because sometimes there are different solutions than in the editorial. In some problems, when I go to see what test case is wrong, I see something like this: "wrong answer XXXX-th numbers differ". Example : 292632130. When this number is big, I cannot see the wrong case. Maybe instead of this, it can show like "wrong answer in test case: (TEST CASE)".