Good evening. This is the first post. Thank you.
On 2021/1/10, I participated in Atcorder's ABC contest and got a rate. https://atcoder.jp/users/ishikawaryou
I managed to solve the C problem in time. I'm originally a COBOL engineer and I'm completely self-taught in Java, but I'll praise myself for solving the C problem, though it takes time.
I will continue to work hard and aim for brown! Those who are also working hard at the gray level will do their best together.