| 6400 | Parentheses Matrix | 34.89%(626/1794) |
| 6401 | Magic Square | 74.93%(750/1001) |
| 6402 | Boolean 3-Array | 45.16%(14/31) |
| 6403 | Card Game | 31.24%(298/954) |
| 6404 | K-Similar Strings | 29.73%(22/74) |
| 6405 | Make ZYB Happy | 46.06%(181/393) |
| 6406 | Taotao Picks Apples | 28.26%(1337/4731) |
| 6407 | Pop the Balloons | 33.57%(235/700) |
| 6408 | From ICPC to ACM | 30.67%(250/815) |
| 6409 | 没有兄弟的舞会 | 33.53%(280/835) |
| 6410 | 序列期望 | 45.25%(348/769) |
| 6411 | 带劲的and和 | 34.12%(247/724) |
| 6412 | 公共子序列 | 44.23%(69/156) |
| 6413 | 棋盘上的旅行 | 14.92%(155/1039) |
| 6414 | 带劲的多项式 | 37.21%(16/43) |
| 6415 | Rikka with Nash Equilibrium | 40.58%(1038/2558) |
| 6416 | Rikka with Seam | 47.11%(204/433) |
| 6417 | Rikka with APSP | 42.93%(79/184) |
| 6418 | Rikka with Stone-Paper-Scissors | 48.62%(563/1158) |
| 6419 | Rikka with Rain | 30.42%(80/263) |
| 6420 | Rikka with Spanning Tree | 30.65%(19/62) |
| 6421 | Rikka with Treasure | 25.86%(15/58) |
| 6422 | Rikka with Line Graph | 21.52%(17/79) |
| 6423 | Rikka with Bubble Sort | 7.61%(15/197) |
| 6424 | Rikka with Time Complexity | 35.12%(269/766) |
| 6425 | Rikka with Badminton | 54.40%(661/1215) |
| 6426 | Problem A.Alkane | 59.73%(89/149) |
| 6427 | Problem B. Beads | 35.38%(98/277) |
| 6428 | Problem C. Calculate | 39.31%(285/725) |
| 6429 | Problem D. Permutation | 37.08%(89/240) |
| 6430 | Problem E. TeaTree | 34.31%(1134/3305) |
| 6431 | Problem F. NewNippori | 22.41%(26/116) |
| 6432 | Problem G. Cyclic | 62.63%(558/891) |
| 6433 | Problem H. Pow | 50.71%(1145/2258) |
| 6434 | Problem I. Count | 42.62%(765/1795) |
| 6435 | Problem J. CSGO | 50.11%(882/1760) |
| 6436 | Problem K. Pow2 | 55.21%(90/163) |
| 6437 | Problem L.Videos | 44.14%(723/1638) |
| 6438 | Buy and Resell | 35.82%(1937/5408) |
| 6439 | Congruence equation | 28.17%(111/394) |
| 6440 | Dream | 43.81%(1136/2593) |
| 6441 | Find Integer | 31.54%(2163/6859) |
| 6442 | GuGu Convolution | 26.20%(272/1038) |
| 6443 | Neko and Inu | 17.24%(10/58) |
| 6444 | Neko's loop | 22.67%(838/3696) |
| 6445 | Search for Answer | 36.54%(57/156) |
| 6446 | Tree and Permutation | 36.57%(1458/3987) |
| 6447 | YJJ's Salesman | 34.65%(1655/4777) |
| 6448 | Sockpuppets | 20.00%(4/20) |
| 6449 | Sequences Generator | 13.64%(3/22) |
| 6450 | Insertion Sort | 44.16%(68/154) |
| 6451 | Diameter of a Tree | 7.50%(3/40) |
| 6452 | The Kouga Ninja Scrolls | 18.75%(12/64) |
| 6453 | Counting Sheep in Ami Dongsuo | 22.06%(15/68) |
| 6454 | Best ACMer Solves the Hardest Problem | 19.81%(41/207) |
| 6455 | Rainbow Graph | 12.07%(7/58) |
| 6456 | Distance Between Sweethearts | 29.51%(18/61) |
| 6457 | How Much Memory Your Code Is Using? | 33.86%(150/443) |
| 6458 | Let the Flames Begin | 21.07%(51/242) |
| 6459 | Machining Disc Rotors | 29.13%(37/127) |
| 6460 | Renaissance Past in Nancy | 30.43%(7/23) |
| 6461 | hzy 和zsl 的生存挑战 | 39.63%(934/2357) |
| 6462 | 人类史上最大最好的希望事件 | 24.48%(844/3448) |
| 6463 | 超级无敌简单题 | 35.40%(1100/3107) |
| 6464 | 免费送气球 | 18.31%(258/1409) |
| 6465 | 水题 | 37.17%(71/191) |
| 6466 | 清一色 | 46.09%(59/128) |
| 6467 | 简单数学题 | 39.36%(579/1471) |
| 6468 | zyb的面试 | 34.14%(535/1567) |
| 6469 | 故事 | 25.67%(105/409) |
| 6470 | Count | 30.35%(1001/3298) |
| 6471 | 电子锁 | 49.17%(148/301) |
| 6472 | 艺术台阶 | 27.27%(21/77) |
| 6473 | 交通灯 | 30.59%(67/219) |
| 6474 | 老虎机 | 22.61%(52/230) |
| 6475 | 商业竞争 | 48.39%(15/31) |
| 6476 | 自动驾驶系统 | 25.21%(92/365) |
| 6477 | 数据恢复 | 45.69%(53/116) |
| 6478 | 三色抽卡游戏 | 33.68%(96/285) |
| 6479 | 质数串 | 55.63%(84/151) |
| 6480 | A Count Task | 34.58%(1311/3791) |
| 6481 | A Math Problem | 17.95%(56/312) |
| 6482 | A Path Plan | 45.35%(288/635) |
| 6483 | A Sequence Game | 19.66%(300/1526) |
| 6484 | A Hard Allocation | 47.28%(1149/2430) |
| 6485 | Similar Strings | 36.67%(297/810) |
| 6486 | Flower | 25.86%(910/3519) |
| 6487 | Overflow | 36.70%(709/1932) |
| 6488 | Binary | 10.26%(4/39) |
| 6489 | The puzzle | 38.43%(1074/2795) |
| 6490 | 开场白 | 44.88%(324/722) |
| 6491 | 时间间隔 | 52.93%(289/546) |
| 6492 | 分宿舍 | 28.67%(361/1259) |
| 6493 | PASS | 56.08%(286/510) |
| 6494 | 球赛 | 30.82%(135/438) |
| 6495 | 冰水挑战 | 37.91%(334/881) |
| 6496 | 大厦 | 40.54%(60/148) |
| 6497 | 骑行 | 31.08%(23/74) |
| 6498 | 跨洋飞行 | 33.62%(39/116) |
| 6499 | 探索行星 | 18.75%(3/16) |
