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Recent Problems

IDDescription / TitleSolved By
677Coloured Graphs
50
676Matching Digit Sums
114
675$2^{\omega(n)}$
260
674Solving $\mathcal{I}$-equations
91
673Beds and Desks
157
672One more one
143
671Colouring a Loop
92
670Colouring a Strip
187
669The King's Banquet
175
668Square root smooth Numbers
427