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October challenge problem CHEFTAK is a mess
20 Oct, 23:04
1.1k●13
17 Answers
12 Votes
12  0 
50 Tags
oct18
× 12 challenge × 10 issue × 8 cheftak × 8 editorial × 7 hard × 5 likecs × 3 fft × 3 math × 3 approach × 2 
june18
× 2 aug18 × 2 feb18 × 2 recurrences × 2 combinatorics × 1 matrix × 1 matrixmul × 1 dsu × 1 lucasth × 1 meta × 1 
solution
× 1 implementation × 1 cuttree × 1 maths × 1 logic × 1 mediumhard × 1 lcp × 1 lucastheorem × 1 partialsums × 1 march18 × 1 
snck1a19
× 1 tle × 1 bfs × 1 codeforces × 1 snackdown × 1 dynamicprogramming × 1 avgmat × 1 probability × 1 multiplication × 1 divideandconq × 1 
centroiddecomp
× 1 goodset × 1 nov18 × 1 output × 1 linkcuttree × 1 expectedvalue × 1 step_by_step × 1 long × 1 easymedium × 1 suffixarray × 1 