| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 4219 | P793G Oleg and chess | 0 / 0 | (None) | |
| 4213 | P794F Leha and security system | 0 / 0 | (None) | |
| 4209 | P796C Bank Hacking | 0 / 0 | (None) | |
| 4206 | P796F Sequence Recovery | 0 / 0 | (None) | |
| 4203 | P797C Minimal string | 0 / 0 | (None) | |
| 4202 | P797D Broken BST | 0 / 0 | (None) | |
| 4201 | P797E Array Queries | 0 / 0 | (None) | |
| 4200 | P797F Mice and Holes | 0 / 0 | (None) | |
| 4195 | P798E Mike and code of a permutation | 0 / 0 | (None) | |
| 4193 | P799B T-shirt buying | 0 / 0 | (None) | |
| 4192 | P799C Fountains | 0 / 0 | (None) | |
| 4190 | P799E Aquarium decoration | 0 / 0 | (None) | |
| 4189 | P799F Beautiful fountains rows | 0 / 0 | (None) | |
| 4188 | P799G Cut the pie | 0 / 0 | (None) | |
| 4184 | P802B Heidi and Library (medium) | 0 / 0 | (None) | |
| 4171 | P802O April Fools' Problem (hard) | 0 / 0 | (None) | |
| 4164 | P803G Periodic RMQ Problem | 0 / 0 | (None) | |
| 4152 | P808B Average Sleep Time | 0 / 0 | (None) | |
| 4150 | P808D Array Division | 0 / 0 | (None) | |
| 4143 | P809D Hitchhiking in the Baltic States | 0 / 0 | (None) | 
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