Reaction Log /sym/649cc0
id=1 · host=co.gridbatch.net · 2026-10-17 23:15Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
465K
\frac{6}{7} \sum_{i=1}^{n} i^{2}
det| 7 4 ; 4 8 | = 40
60K
∑_{k=1}^{n} k = n(n+1)/2
det| 4 7 ; 2 5 | = 6
119K
det| 9 5 ; 1 10 | = 85
255K
∑_{k=1}^{n} k = n(n+1)/2
173K