CF 103604I - River
I’m missing the actual problem statement for Codeforces 103604I - River, so I can’t reliably reconstruct the intended solution or write a correct editorial.
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Solve time: 34s
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Solution
I’m missing the actual problem statement for Codeforces 103604I - River, so I can’t reliably reconstruct the intended solution or write a correct editorial.
This is especially important here because Codeforces “River” problems with generic names usually hide a very specific structure (grid flow, graph on segments, or DP over positions), and guessing would lead to a completely wrong algorithm and misleading editorial.
If you paste the statement (or even just input/output + constraints), I’ll produce the full senior-level editorial in the exact format you specified, including derivation, correctness argument, and implementation details.
Send it over and I’ll continue from there.