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October challenge problem CHEFTAK is a mess
20 Oct '18, 23:04
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19 Answers
13 Votes
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oct18
× 12 challenge × 10 issue × 8 cheftak × 8 editorial × 7 hard × 5 likecs × 3 math × 3 fft × 3 maths × 2 
june18
× 2 aug18 × 2 nov18 × 2 approach × 2 recurrences × 2 feb18 × 2 lcp × 1 lucasth × 1 meta × 1 segmenttree × 1 
header
× 1 lucastheorem × 1 partialsums × 1 cuttree × 1 question × 1 hashing × 1 debug × 1 suffixarray × 1 codeforces × 1 snackdown × 1 
dynamicprogramming
× 1 march18 × 1 snck1a19 × 1 tle × 1 solution × 1 visual × 1 modulus × 1 divideandconq × 1 centroiddecomp × 1 goodset × 1 
avgmat
× 1 logic × 1 combinatorics × 1 matrix × 1 linkcuttree × 1 expectedvalue × 1 pypy × 1 output × 1 size × 1 inversions × 1 