Hello, codeforces!

Maybe someone knows if there is somewhere the same problem as 2B - Наименее круглый путь, but for a sum of numbers? Thanks in advance

Hello, codeforces!

I want to try myself as a round tester for a long time, but as far as I know, It's possible to become a tester only by having some connections. Unfortunately, I have no them:/ so, I ask problemsetters of the future contests: if you need a blue tester, I'd really appreciate it if you invite me:)

WYSI 727

sorry for shitposting:)

UPD: explanation