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Problems

Graphs
Difficulty
Sort by
540
Teleport Out!
Hard
546
Speedy Escape
Medium
548
Flight Planning
Very easy
549
Beacons
Very easy
560
Ray of Light
Medium
569
Eating Cheese
Hard
570
The programming competition
Easy
581
Evacuation
Easy
586
Fill
Easy
610
Ancient manuscripts
Easy
618
Queen
Very easy
625
Distance between the vertices
Very easy
626
Hard Test
635
Constellation
Medium
640
Minimaximal matching
Easy
642
Two snails
Hard
659
Tree Games
Very easy
668
Buses and airplanes
Medium
673
Kingdom
Hard
674
Weather conditions
Easy
676
Vectors
Easy
690
Oh, the roads...
Easy
712
Radio transmitters
Easy
720
Duchess
Medium
745
Skiing
Very easy
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