Graph matchings, König's theorem, vertex cover of bipartite graph
 
 
# Name   Solved Sort desc.
852D Submit  x267
793G Submit  x40
739D Submit  x51
737E Submit  x20
618D Submit  x1007
590E Submit  x147
575C Submit  x119
498C Submit  x1286
491C Submit  x161
489B Submit  x9364
468E Submit  x29
468D Submit  x104
468B Submit  x1848
387D Submit  x357
353E Submit  x327
337A Submit  x16851
316C2 Submit  x343
290C Submit  x885
266B Submit  x17463
167D Submit  x96
166D Submit  x196
120H Submit  x647
103E Submit  x212
86B Submit  x234
21D Submit  x268