Kooko's favorites
| # | Problem |
|---|---|
| 5532 | OMC115(F) |
| 10556 | OMC246(B) |
| 12962 | OMC251(B) |
| 143 | OMC023(D) |
| 6267 | OMCB004(H) |
| 11266 | OMCB036(F) |
| 2861 | OMC193(C) |
| 3818 | OMC153(D) |
| 9745 | OMCB029(G) |
| 8442 | OMCB007(F) |
| 16166 | OMCB063(G) |
| 10711 | OMCB033(E) |
| 11389 | OMCB042(E) |
| 2439 | OMC061(C) |
| 2345 | OMC086(C) |
| 6009 | OMC197(H) |
| 3282 | OMC105(D) |
| 4960 | OMC197(D) |
| 4452 | OMC153(B) |
| 12651 | OMCB035(C) |
| 4416 | OMCB041(F) |
| 12168 | OMC267(F) |
| 11751 | OMC252(D) |
| 11675 | OMCB060(F) |
| 11701 | OMCB043(G) |
| 12199 | OMC256(C) |
| 11017 | OMC260(B) |
| 4657 | OMC257(B) |