| Problem name | | In short | Forum |
| 2007.A. 50671 - Phalanx |
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Arrangements of castles on the checkered board |
Clarifications (8) » |
| 2007.B. 50270 - Bitsorting |
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The K-th number of newly sorted integers |
Discussion (1) » |
| 2007.C. 50640 - Cubes |
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A square of cubes if one cube is lost |
Discussion (1) » |
| 2007.D. 50271 - Factorial |
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Find K successive digits in N! |
Discussion (1) » |
| 2007.E. 50663 - Lights |
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Color of the point, illuminated by lights |
Discussion (1) » |
| 2007.F. 50690 - Parliament |
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Split the insulted deputies into few groups |
Discussion (1) » |
| 2007.G. 50272 - Strange Numbers |
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The quantity of strange numbers within L to R |
Discussion (1) » |
| 2007.H. 50273 - Two Captains |
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Find the number of arrangements of the sailors |
Discussion (1) » |
| 2007.I. 50274 - Boundary Troops |
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Distribute solders to greatest number of squads |
Discussion (1) » |
| 2007.J. 50275 - Wedding |
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K guests out of N with M pairs of familiars |
Discussion (1) » |
| 2007.K. 50276 - Nice Floor |
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Lay the square floor with the pieces |
Discussion (1) » |
| 2008.A. 50672 - Math and Soldiers |
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Discussion (1) » |
| 2008.B. 50261 - Roads |
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Discussion (1) » |
| 2008.C. 50262 - Brackets |
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Discussion (4) » |
| 2008.D. 50279 - Bit Decoder |
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Discussion (1) » |
| 2008.E. 50263 - Points |
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Discussion (1) » |
| 2008.F. 50972 - Division |
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Discussion (2) » |
| 2008.G. 50264 - String Multiplication |
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Discussion (1) » |
| 2008.H. 50254 - Lawyers Council |
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Discussion (1) » |
| 2009.A. 50283 - Tetris 3D |
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Discussion (1) » |
| 2009.B. 50284 - Knights of the Rook |
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Discussion (1) » |
| 2009.C. 50285 - Meat store |
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Discussion (1) » |
| 2009.D. 50259 - Many-coloured roads |
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Discussion (1) » |
| 2009.E. 50266 - Kovrov |
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Discussion (1) » |