| 3800 | Centeur | 16.67%(13/78) |
| 3801 | How Many HouGong | 9.62%(15/156) |
| 3802 | Ipad,IPhone | 43.60%(211/484) |
| 3803 | gxx's Problem | 22.58%(156/691) |
| 3804 | Query on a tree | 27.10%(625/2306) |
| 3805 | Triangle Conjecture | 46.37%(115/248) |
| 3806 | Configuration files | 15.71%(22/140) |
| 3807 | How many people have ipad II | 43.57%(149/342) |
| 3808 | Celebration of Stefanie's Wedding | 45.74%(306/669) |
| 3809 | Decrypt coordinate | 44.63%(428/959) |
| 3810 | Magina | 35.03%(407/1162) |
| 3811 | Permutation | 47.74%(328/687) |
| 3812 | Sea Sky | 18.57%(210/1131) |
| 3813 | Seeing the Stars | 0.00%(0/82) |
| 3814 | Signal Coverage | 11.07%(28/253) |
| 3815 | Stones | 26.38%(81/307) |
| 3816 | To Be NUMBER ONE | 55.03%(361/656) |
| 3817 | Triangle | 63.09%(1017/1612) |
| 3818 | A + B Problem | 35.16%(288/819) |
| 3819 | A and B Problem | 33.86%(342/1010) |
| 3820 | Golden Eggs | 59.86%(443/740) |
| 3821 | Graceful Matrix | 34.80%(150/431) |
| 3822 | Moving the Mouse | 0.81%(1/124) |
| 3823 | Prime Friend | 19.52%(1539/7885) |
| 3824 | Saving the Princess | 23.47%(119/507) |
| 3825 | Splendid Moment Collector | 30.86%(83/269) |
| 3826 | Squarefree number | 27.14%(1569/5781) |
| 3827 | The Killers of Two Kingdoms | 34.64%(106/306) |
| 3828 | A + B problem | 23.43%(224/956) |
| 3829 | Cat VS Dog | 35.98%(2392/6649) |
| 3830 | Checkers | 28.05%(769/2742) |
| 3831 | DICS | 41.95%(336/801) |
| 3832 | Earth Hour | 40.82%(1011/2477) |
| 3833 | YY's new problem | 28.98%(1894/6536) |
| 3834 | Where am I | 18.54%(223/1203) |
| 3835 | R(N) | 51.58%(1693/3282) |
| 3836 | Equivalent Sets | 35.50%(2944/8292) |
| 3837 | To Add or to Multiply | 22.96%(62/270) |
| 3838 | Affine Mess | 35.09%(40/114) |
| 3839 | Ancient Messages | 33.11%(437/1320) |
| 3840 | Chips Challenge | 36.97%(61/165) |
| 3841 | Coffee Central | 36.16%(213/589) |
| 3842 | Machine Works | 32.15%(542/1686) |
| 3843 | Magic Sticks | 28.41%(75/264) |
| 3844 | Mining Your Own Business | 21.64%(621/2870) |
| 3845 | Mummy Madness | 26.47%(117/442) |
| 3846 | Pyramids | 23.06%(110/477) |
| 3847 | Trash Removal | 32.93%(437/1327) |
| 3848 | CC On The Tree | 35.46%(745/2101) |
| 3849 | By Recognizing These Guys, We Find Social Networks Useful | 26.13%(1184/4531) |
| 3850 | Puzzling Maze | 29.03%(63/217) |
| 3851 | Beat It! | 33.11%(339/1024) |
| 3852 | Even For Ever | 3.36%(5/149) |
| 3853 | LOOPS | 36.08%(4919/13634) |
| 3854 | Glorious Array | 31.37%(245/781) |
| 3855 | Chocolate Machine | 31.27%(177/566) |
| 3856 | Palindrome | 0.47%(3/632) |
| 3857 | Who pat the head of itself? | 52.97%(473/893) |
| 3858 | Counting Grids | 1.26%(3/239) |
| 3859 | Inverting Cups | 28.42%(332/1168) |
| 3860 | Circuit Board | 28.48%(135/474) |
| 3861 | The King’s Problem | 32.58%(1840/5648) |
| 3862 | The Lost Traveler | 32.47%(289/890) |
| 3863 | No Gambling | 74.58%(1910/2561) |
| 3864 | D_num | 28.93%(1500/5185) |
| 3865 | A Hard Journey | 38.80%(123/317) |
| 3866 | Moonfang's Birthday | 42.51%(494/1162) |
| 3867 | Light and Shadow | 28.62%(249/870) |
| 3868 | The Triangle ransmitter | 43.43%(334/769) |
| 3869 | Color the Simple Cycle | 25.38%(100/394) |
| 3870 | Catch the Theves | 33.73%(660/1957) |
| 3871 | Cubic Maze | 18.05%(72/399) |
| 3872 | Dragon Ball | 45.70%(186/407) |
| 3873 | Invade the Mars | 28.03%(1044/3725) |
| 3874 | Necklace | 34.35%(2351/6845) |
| 3875 | Euclidean Algorithm | 31.09%(213/685) |
| 3876 | A pupil’s problem | 38.59%(477/1236) |
| 3877 | Special sort | 29.29%(575/1963) |
| 3878 | X Property | 1.04%(2/193) |
| 3879 | Base Station | 41.45%(1360/3281) |
| 3880 | Lucky Numbers | 30.16%(387/1283) |
| 3881 | Pirates of the Caribbean | 20.72%(98/473) |
| 3882 | Strange Galaxy | 49.02%(50/102) |
| 3883 | CS and Sugar | 40.70%(208/511) |
| 3884 | Hinanai Tenshi’s peach garden | 29.28%(183/625) |
| 3885 | Find the Difference | 43.11%(219/508) |
| 3886 | Final Kichiku “Lanlanshu” | 38.81%(619/1595) |
| 3887 | Counting Offspring | 32.25%(1662/5154) |
| 3888 | Hatsune Miku | 5.15%(7/136) |
| 3889 | Statistical Problems | 41.21%(300/728) |
| 3890 | Apparent Magnitude | 30.66%(283/923) |
| 3891 | Being a Predictor | 48.59%(190/391) |
| 3892 | Common Roots | 41.73%(154/369) |
| 3893 | Drawing Pictures | 46.36%(331/714) |
| 3894 | East and West | 23.24%(79/340) |
| 3895 | Find the Circle | 27.16%(63/232) |
| 3896 | Greatest TC | 30.50%(308/1010) |
| 3897 | Happy Trip | 4.76%(6/126) |
| 3898 | Indeed Quick Sort | 7.22%(14/194) |
| 3899 | JLUCPC | 32.40%(488/1506) |
