help on edu problem

Правка en1, от mac_n_cheese_pog, 2021-09-05 13:53:11

after thinking for 2 hours i cant solve this problem https://codeforces.net/edu/course/2/lesson/9/1/practice/contest/307092/problem/C can someone help me?

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en1 Английский mac_n_cheese_pog 2021-09-05 13:53:11 173 Initial revision (published)