How are we supposed to know when the input has ended in problem 5A?

Revision en1, by project2400, 2026-02-28 03:04:08

Link: https://codeforces.me/problemset/problem/5/A

My input reading implementation just hangs because there is no end-of-file delimiter...

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en1 English project2400 2026-02-28 03:04:08 209 Initial revision (published)