Editorial - Σ[k=0..10^100]floor(X／10^k)

Contest Duration: 2025-09-24 16:00:00+0900 - 2025-09-24 17:00:00+0900 (local time) (60 minutes) Back to Home

H - Σ[k=0..10^100]floor(X／10^k) Editorial

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