this problem 774C - Максимальное число from this contest VK Cup 2017 - Уайлд-кард раунд 1 was repeated in the last contest Educational Codeforces Round 81 (рейтинговый для Див. 2) as the problem "A" 1295A - Отобрази число in fact the test cases given were the same and the solution was also the same other than including test cases. I think MikeMirzayanov should look into this matter. Thank you.