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Problems

Geometry
Difficulty
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4201
Parallelogram
Very easy
4205
Pilot Monitor
4209
Triangular Papyrus
Medium
4222
Counting Pixels
4236
Cloudlet
Very hard
4239
Laser in a Mirrored Polygon
Very hard
4254
Angle
Very easy
4262
Distance from the point
Easy
4275
Town Square
Medium
4276
The Trap for the Elephantopotamus
Medium
4277
Let's shoot down the balloon.
Easy
4278
To school by bicycle
Very hard
4279
Convex hull
Hard
4280
Points diameter
Medium
4294
Billiard
4303
Guests from Tau Ceti
4321
Three Circles
Very hard
4331
Dancing with Baobabs
4348
Sniper Shot
Very hard
4355
Sheep in the hall
Very easy
4362
Vanya, inscribed in the polygon
Hard
4383
Football
4384
Football 2
Medium
4385
Union of circles
Very hard
4386
Jungle Outpost
Very easy
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