| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 2029 | P1255A Changing Volume | 0 / 0 | (None) | |
| 2026 | P1256A Payment Without Change | 0 / 0 | (None) | |
| 2020 | P1257A Two Rival Students | 0 / 0 | (None) | |
| 2019 | P1257B Magic Stick | 0 / 0 | (None) | |
| 2014 | P1257G Divisor Set | 0 / 0 | (None) | |
| 2013 | P1260A Heating | 0 / 0 | (None) | |
| 2012 | P1260B Obtain Two Zeroes | 0 / 0 | (None) | |
| 2011 | P1260C Infinite Fence | 0 / 0 | (None) | |
| 2007 | P1261F Xor-Set | 0 / 0 | (None) | |
| 2006 | P1263A Sweet Problem | 0 / 0 | (None) | |
| 2004 | P1263C Everyone is a Winner! | 0 / 0 | (None) | |
| 1992 | P1265B Beautiful Numbers | 0 / 0 | (None) | |
| 1991 | P1265E Beautiful Mirrors | 0 / 0 | (None) | |
| 1990 | P1266A Competitive Programmer | 0 / 0 | (None) | |
| 1989 | P1266B Dice Tower | 0 / 0 | (None) | |
| 1988 | P1266C Diverse Matrix | 0 / 0 | (None) | |
| 1987 | P1266D Decreasing Debts | 0 / 0 | (None) | |
| 1983 | P1266H Red-Blue Graph | 0 / 0 | (None) | |
| 1976 | P1267G Game Relics | 0 / 0 | (None) | |
| 1973 | P1267J Just Arrange the Icons | 0 / 0 | (None) |
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