1978E - Computing Machine — 266794537. It's failing in hidden test cases.
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Codeforces (c) Copyright 2010-2026 Mike Mirzayanov
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Just add in your code counter of the q. And if the sum of q is 529, print the test (then terminate the program). But to not print all 529 numbers, you can skip all unneeded after 9th (so it passes the first test). With this you will see the test on which it fails.