Browse Problems 
Our Patreons
Diamond Sponsors
Steven & Felix Halim
Reinardus Pradhitya
Gold Sponsors
--- YOUR NAME HERE ----
Silver Sponsors
--- YOUR NAME HERE ----
Bronze Sponsors
Christianto Handojo
Krzysztof Adamek
Fatima Broom
Contribute
Bitcoin:
1ojudgeapLUjJcnUm
ze67a4w3TJ6WnPxo
Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
800 - Crystal Clear | 346 |
13.29%
|
114 |
30.70%
|
|
|
|
801 - Flight Planning | 534 |
20.60%
|
137 |
58.39%
|
|
|
|
802 - Lead or Gold | 1523 |
14.71%
|
271 |
46.13%
|
|
|
803 - Page Selection by Keyword Matching | 555 |
31.35%
|
104 |
42.31%
|
|
|
|
804 - Petri Net Simulation | 3603 |
33.47%
|
528 |
81.63%
|
|
|
|
805 - Polygon Intersections | 232 |
13.79%
|
90 |
26.67%
|
|
|
|
806 - Spatial Structures | 4904 |
27.39%
|
676 |
80.03%
|
|
|
|
807 - Towers of Powers | 415 |
17.35%
|
110 |
56.36%
|
|
|
|
808 - Bee Breeding | 4903 |
41.81%
|
1301 |
86.09%
|
|
|
|
809 - Bullet Hole | 1084 |
5.17%
|
180 |
25.56%
|
|
|
|
810 - A Dicey Problem | 3586 |
38.32%
|
623 |
85.39%
|
|
|
|
811 - The Fortified Forest | 3120 |
35.03%
|
795 |
80.00%
|
|
|
|
812 - Trade on Verweggistan | 8085 |
23.41%
|
1132 |
78.80%
|
|
|
|
813 - Robot | 530 |
10.94%
|
123 |
32.52%
|
|
|
|
814 - The Letter Carrier's Rounds | 5414 |
31.71%
|
848 |
78.54%
|
|
|
|
815 - Flooded! | 15850 |
32.21%
|
2223 |
86.73%
|
|
|
|
816 - Abbott's Revenge | 16316 |
31.72%
|
1889 |
83.80%
|
|
|
|
817 - According to Bartjens | 2705 |
31.24%
|
488 |
71.52%
|
|
|
|
818 - Cutting Chains | 3156 |
48.83%
|
626 |
86.10%
|
|
|
|
819 - Gifts Large and Small | 1073 |
15.84%
|
178 |
52.81%
|
|
|
|
820 - Internet Bandwidth | 39294 |
35.85%
|
7243 |
89.69%
|
|
|
|
821 - Page Hopping | 19093 |
55.92%
|
6747 |
94.15%
|
|
|
|
822 - Queue and A | 2272 |
40.40%
|
422 |
79.62%
|
|
|
|
823 - Stopper Stumper | 609 |
21.67%
|
154 |
57.14%
|
|
|
|
824 - Coast Tracker | 2257 |
49.71%
|
933 |
88.00%
|
|
|
|
825 - Walking on the Safe Side | 18830 |
28.88%
|
3460 |
84.08%
|
|
|
|
826 - Symbolic Numerical System | 1046 |
9.18%
|
148 |
53.38%
|
|
|
|
827 - Buddy Memory Allocator | 518 |
16.02%
|
113 |
53.98%
|
|
|
|
828 - Deciphering Messages | 964 |
28.94%
|
286 |
70.98%
|
|
|
|
829 - Almost Balanced Trees | 649 |
13.56%
|
85 |
35.29%
|
|
|
|
830 - Shark | 1273 |
29.77%
|
355 |
73.24%
|
|
|
|
831 - Document Validator | 553 |
27.12%
|
130 |
55.38%
|
|
|
|
832 - Financial Risk | 719 |
19.75%
|
175 |
65.71%
|
|
|
|
833 - Water Falls | 4038 |
39.90%
|
1488 |
81.38%
|
|
|
|
834 - Continued Fractions | 13393 |
62.93%
|
6622 |
95.29%
|
|
|
|
835 - Square of Primes | 1595 |
22.70%
|
327 |
54.74%
|
|
|
|
836 - Largest Submatrix | 15008 |
34.97%
|
4661 |
83.78%
|
|
|
|
837 - Light and Transparencies | 5453 |
37.72%
|
1689 |
85.67%
|
|
|
|
838 - Worm World | 2700 |
15.15%
|
493 |
39.76%
|
|
|
|
839 - Not so Mobile | 27363 |
36.68%
|
4649 |
87.72%
|
|
|
|
840 - Deadlock Detection | 868 |
23.73%
|
255 |
64.71%
|
|
|
|
841 - Snake | 1237 |
11.08%
|
132 |
49.24%
|
|
|
|
842 - Crossword Puzzles | 366 |
27.87%
|
100 |
58.00%
|
|
|
|
843 - Crypt Kicker | 23908 |
24.09%
|
4768 |
68.37%
|
|
|
|
844 - Pousse | 617 |
38.41%
|
235 |
70.64%
|
|
|
|
845 - Gas Station Numbers | 1941 |
25.91%
|
504 |
68.85%
|
|
|
|
846 - Steps | 20648 |
48.68%
|
7866 |
89.82%
|
|
|
|
847 - A Multiplication Game | 18600 |
52.22%
|
8257 |
88.77%
|
|
|
|
848 - Fmt | 5666 |
20.74%
|
1196 |
63.29%
|
|
|
|
849 - Radar Tracking | 939 |
9.37%
|
120 |
28.33%
|
|
|
|
850 - Crypt Kicker II | 21634 |
23.46%
|
4773 |
72.76%
|
|
|
|
851 - Maze | 2383 |
23.04%
|
289 |
54.33%
|
|
|
|
852 - Deciding victory in Go | 3602 |
56.75%
|
1511 |
93.18%
|
|
|
|
853 - DVD Subtitles | 582 |
20.62%
|
117 |
64.96%
|
|
|
|
854 - Worse Code | 362 |
16.57%
|
63 |
53.97%
|
|
|
|
855 - Lunch in Grid City | 10178 |
35.37%
|
2755 |
86.24%
|
|
|
|
856 - The Vigenère Cipher | 966 |
41.82%
|
371 |
77.09%
|
|
|
|
857 - Quantiser | 1027 |
41.58%
|
348 |
85.34%
|
|
|
|
858 - Berry Picking | 1470 |
42.11%
|
484 |
87.19%
|
|
|
|
859 - Chinese Checkers | 1170 |
28.46%
|
304 |
79.93%
|
|
|
|
860 - Entropy Text Analyzer | 4571 |
26.67%
|
883 |
78.14%
|
|
|
|
861 - Little Bishops | 16353 |
35.24%
|
4250 |
79.32%
|
|
|
|
862 - Origami | 269 |
17.10%
|
54 |
62.96%
|
|
|
|
863 - Process Scheduling | 498 |
2.41%
|
52 |
7.69%
|
|
|
|
864 - Scheme Pretty-Printing | 134 |
34.33%
|
81 |
51.85%
|
|
|
|
865 - Substitution Cypher | 6112 |
29.11%
|
1558 |
80.36%
|
|
|
|
866 - Intersecting Line Segments | 3493 |
44.66%
|
1075 |
86.23%
|
|
|
|
867 - Storing Images in a Sequence | 84 |
1.19%
|
39 |
2.56%
|
|
|
|
868 - Numerical Maze | 2409 |
28.52%
|
642 |
77.88%
|
|
|
|
869 - Airline Comparison | 3988 |
43.30%
|
1265 |
84.43%
|
|
|
|
870 - Intersecting Rectangles | 664 |
29.82%
|
205 |
79.51%
|
|
|
|
871 - Counting Cells in a Blob | 17669 |
31.46%
|
3268 |
89.69%
|
|
|
|
872 - Ordering | 8911 |
42.04%
|
2813 |
92.32%
|
|
|
|
873 - Loan (II) | 374 |
28.88%
|
109 |
75.23%
|
|
|
|
874 - 2D Representations | 565 |
28.32%
|
160 |
59.38%
|
|
|
|
875 - Monopoly | 67 |
1.49%
|
45 |
2.22%
|
|
|
|
876 - Balanced Expressions | 114 |
3.51%
|
55 |
5.45%
|
|
|
|
877 - Offset Polygons | 360 |
26.39%
|
103 |
76.70%
|
|
|
|
878 - Rotating Tetris Pieces | 524 |
26.53%
|
90 |
66.67%
|
|
|
|
879 - Circuit Nets | 1845 |
23.58%
|
325 |
72.00%
|
|
|
|
880 - Cantor Fractions | 9126 |
31.54%
|
2244 |
81.11%
|
|
|
|
881 - Points, Polygons and Containers | 627 |
26.48%
|
155 |
75.48%
|
|
|
|
882 - The Mailbox Manufacturers Problem | 1617 |
74.34%
|
748 |
94.39%
|
|
|
|
883 - Overlapping Rectangles | 348 |
33.05%
|
116 |
76.72%
|
|
|
|
884 - Factorial Factors | 15163 |
44.87%
|
3604 |
84.99%
|
|
|
|
885 - Telephone Directory Alphabetization | 473 |
7.61%
|
60 |
40.00%
|
|
|
|
886 - Named Extension Dialing | 824 |
30.46%
|
228 |
81.58%
|
|
|
|
887 - Revolutionary Calendar | 446 |
16.37%
|
56 |
58.93%
|
|
|
|
888 - Donkey | 451 |
14.86%
|
78 |
33.33%
|
|
|
|
889 - Islands | 198 |
34.85%
|
59 |
57.63%
|
|
|
|
890 - Maze (II) | 435 |
27.13%
|
126 |
68.25%
|
|
|
|
891 - Syntrax | 226 |
26.11%
|
58 |
74.14%
|
|
|
|
892 - Finding words | 2464 |
35.92%
|
898 |
75.06%
|
|
|
|
893 - Y3K Problem | 5182 |
50.17%
|
2294 |
90.80%
|
|
|
|
894 - Juggling Trams | 102 |
24.51%
|
32 |
50.00%
|
|
|
|
895 - Word Problem | 4519 |
59.15%
|
2210 |
93.44%
|
|
|
|
896 - Board Game | 160 |
8.12%
|
43 |
18.60%
|
|
|
|
897 - Anagrammatic Primes | 5370 |
46.31%
|
1717 |
91.03%
|
|
|
|
898 - Hole Cutter | 385 |
29.61%
|
97 |
68.04%
|
|
|
|
899 - Colour Circles | 430 |
44.42%
|
153 |
84.31%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |