| 1600 | Harry Potter and the Prisoner of Azkaban(English) | 50.00%(8/16) |
| 1601 | 哈利波特与阿兹卡班的囚徒（中文版） | 53.66%(22/41) |
| 1602 | 哈利波特与火焰杯（上） | 76.32%(29/38) |
| 1603 | 优化题（1） | 33.05%(118/357) |
| 1604 | 优化题（2） | 15.26%(78/511) |
| 1605 | 优化题（3） | 27.97%(40/143) |
| 1606 | 求众数 | 21.29%(96/451) |
| 1607 | 求中位数 | 10.65%(110/1033) |
| 1608 | 求平均数 | 16.86%(71/421) |
| 1609 | The Embarrassed Cryptographer | 16.67%(2/12) |
| 1610 | Semi-prime H-numbers | 62.50%(5/8) |
| 1611 | Sumdiv | 17.65%(6/34) |
| 1612 | Astronomy | 22.22%(2/9) |
| 1613 | Biorhythms | 36.84%(21/57) |
| 1614 | Dividing | 27.50%(11/40) |
| 1615 | The Fun Number System | 30.00%(3/10) |
| 1616 | An Easy Problem! | 18.75%(6/32) |
| 1617 | 反正切函数的应用 | 36.00%(9/25) |
| 1618 | Perfect Pth Powers | 26.32%(5/19) |
| 1619 | Goldbach's Conjecture | 38.46%(5/13) |
| 1620 | 哈利波特与火焰杯（下） | 26.67%(327/1226) |
| 1621 | 哈利波特与凤凰社 | 22.45%(22/98) |
| 1622 | 哈利波特与混血王子 | 25.56%(115/450) |
| 1623 | 哈利波特与死亡圣器（上） | 53.87%(153/284) |
| 1624 | 哈利波特与死亡圣器（下） | 21.00%(21/100) |
| 1625 | Intervals | 50.00%(9/18) |
| 1626 | 测试1 | 0.00%(0/7) |
| 1627 | TOYS | 28.57%(4/14) |
| 1628 | Toy Storage | 57.14%(4/7) |
| 1629 | Segments | 40.00%(2/5) |
| 1630 | Intersecting Lines | 50.00%(6/12) |
| 1631 | The Doors | 0.00%(0/5) |
| 1632 | Pick-up sticks | 50.00%(2/4) |
| 1633 | Treasure Hunt | 33.33%(1/3) |
| 1634 | Intersection | 33.33%(1/3) |
| 1635 | Space Ant | 40.00%(2/5) |
| 1636 | Kadj Squares | 33.33%(1/3) |
| 1637 | An Easy Problem?! | 0.00%(0/3) |
| 1638 | 1039 | 0.00%(0/3) |
| 1639 | Pipe | 25.00%(1/4) |
| 1640 | Geometric Shapes | 33.33%(1/3) |
| 1641 | A Round Peg in a Ground Hole | 0.00%(0/4) |
| 1642 | Wall | 58.33%(14/24) |
| 1643 | Scrambled Polygon | 38.96%(30/77) |
| 1644 | The Fortified Forest | 0.00%(0/4) |
| 1645 | Grandpa's Estate | 21.05%(4/19) |
| 1646 | Cows | 30.65%(19/62) |
| 1647 | Rotating Scoreboard | 0.00%(0/3) |
| 1648 | How I Mathematician Wonder What You Are! | 33.33%(2/6) |
| 1649 | Video Surveillance | 0.00%(0/3) |
| 1650 | Art Gallery | 0.00%(0/3) |
| 1651 | Most Distant Point from the Sea | 0.00%(0/2) |
| 1652 | Feng Shui | 25.00%(1/4) |
| 1653 | Triathlon | 25.00%(1/4) |
| 1654 | Hotter Colder | 33.33%(1/3) |
| 1655 | Uyuw's Concert | 0.00%(0/3) |
| 1656 | Caocao's Bridges | 16.00%(4/25) |
| 1657 | Zhuge Liang's Mines | 50.00%(4/8) |
| 1658 | The Donkey of Gui Zhou | 31.82%(7/22) |
| 1659 | Save Labman No.004 | 55.56%(5/9) |
| 1660 | Pinball Game 3D | 50.00%(2/4) |
| 1661 | Sparrow | 0.00%(0/2) |
| 1662 | Starloop System | 0.00%(0/3) |
| 1663 | Two Rabbits | 63.64%(14/22) |
| 1664 | Mophues | 9.09%(2/22) |
| 1665 | Mex | 31.25%(5/16) |
| 1666 | 涨姿势题0 | 50.65%(157/310) |
| 1667 | 涨姿势题1 | 23.88%(203/850) |
| 1668 | 涨姿势题2 | 20.18%(153/758) |
| 1669 | 涨姿势题3 | 14.51%(140/965) |
| 1670 | QAQ和货运 | 20.00%(7/35) |
| 1671 | Circle | 33.33%(17/51) |
| 1672 | Building roads | 25.00%(1/4) |
| 1673 | 五角星 | 15.38%(6/39) |
| 1674 | 素数 | 6.06%(2/33) |
| 1675 | Kyoya and Colored Balls | 0.00%(0/2) |
| 1676 | QAQ和迷宫 | 26.74%(69/258) |
| 1677 | 互质数的四次方和 | 0.00%(0/11) |
| 1678 | A Game Between Alice and Bob | 0.00%(0/2) |
| 1679 | QAQ和相交线段 | 17.39%(4/23) |
| 1680 | The Child and Toy | 80.95%(17/21) |
| 1681 | QAQ和三角恋 | 23.81%(10/42) |
| 1682 | Triangle LOVE | 50.00%(2/4) |
| 1683 | 连接 | 45.45%(35/77) |
| 1684 | 棋 | 18.75%(3/16) |
| 1685 | QAQ和游戏 | 10.39%(8/77) |
| 1686 | QAQ和GCD | 16.67%(3/18) |
| 1687 | QAQ和尼姆博弈 | 46.36%(51/110) |
| 1688 | Expression | 40.00%(4/10) |
| 1689 | Too Simple | 14.29%(1/7) |
| 1690 | Arithmetic Sequence | 30.00%(3/10) |
| 1691 | Travelling Salesman Problem | 21.74%(5/23) |
| 1692 | CRB and Candies | 40.00%(2/5) |
| 1693 | CRB and His Birthday | 26.67%(8/30) |
| 1694 | CRB and Puzzle | 40.00%(2/5) |
| 1695 | CRB and Queries | 12.50%(1/8) |
| 1696 | CRB and String | 22.22%(16/72) |
| 1697 | CRB and Tree | 55.56%(5/9) |
| 1698 | Alisha’s Party | 33.33%(1/3) |
| 1699 | Ponds | 40.00%(2/5) |