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 | 343 |
13.41%
|
111 |
31.53%
|
|
|
|
801 - Flight Planning | 529 |
20.23%
|
134 |
58.21%
|
|
|
|
802 - Lead or Gold | 1512 |
14.55%
|
268 |
46.27%
|
|
|
803 - Page Selection by Keyword Matching | 551 |
31.03%
|
102 |
42.16%
|
|
|
|
804 - Petri Net Simulation | 3498 |
33.30%
|
506 |
81.42%
|
|
|
|
805 - Polygon Intersections | 229 |
13.97%
|
87 |
27.59%
|
|
|
|
806 - Spatial Structures | 4655 |
27.39%
|
646 |
80.19%
|
|
|
|
807 - Towers of Powers | 411 |
17.52%
|
106 |
58.49%
|
|
|
|
808 - Bee Breeding | 4840 |
41.84%
|
1287 |
86.09%
|
|
|
|
809 - Bullet Hole | 1080 |
5.19%
|
178 |
25.84%
|
|
|
|
810 - A Dicey Problem | 3492 |
38.60%
|
607 |
85.50%
|
|
|
|
811 - The Fortified Forest | 2990 |
35.48%
|
767 |
79.92%
|
|
|
|
812 - Trade on Verweggistan | 8051 |
23.44%
|
1125 |
78.93%
|
|
|
|
813 - Robot | 513 |
9.75%
|
121 |
32.23%
|
|
|
|
814 - The Letter Carrier's Rounds | 5255 |
31.15%
|
815 |
78.28%
|
|
|
|
815 - Flooded! | 15239 |
31.93%
|
2157 |
86.60%
|
|
|
|
816 - Abbott's Revenge | 15801 |
31.67%
|
1823 |
83.76%
|
|
|
|
817 - According to Bartjens | 2653 |
30.91%
|
475 |
71.37%
|
|
|
|
818 - Cutting Chains | 3094 |
48.67%
|
612 |
86.27%
|
|
|
|
819 - Gifts Large and Small | 1066 |
15.67%
|
176 |
52.84%
|
|
|
|
820 - Internet Bandwidth | 38127 |
35.80%
|
7137 |
89.70%
|
|
|
|
821 - Page Hopping | 17544 |
57.03%
|
6543 |
94.24%
|
|
|
|
822 - Queue and A | 2179 |
40.11%
|
404 |
79.95%
|
|
|
|
823 - Stopper Stumper | 527 |
22.01%
|
150 |
57.33%
|
|
|
|
824 - Coast Tracker | 2158 |
49.35%
|
917 |
88.00%
|
|
|
|
825 - Walking on the Safe Side | 17526 |
29.20%
|
3410 |
84.08%
|
|
|
|
826 - Symbolic Numerical System | 854 |
9.72%
|
124 |
55.65%
|
|
|
|
827 - Buddy Memory Allocator | 489 |
14.93%
|
107 |
53.27%
|
|
|
|
828 - Deciphering Messages | 900 |
26.44%
|
276 |
69.57%
|
|
|
|
829 - Almost Balanced Trees | 629 |
13.51%
|
80 |
33.75%
|
|
|
|
830 - Shark | 1246 |
29.53%
|
349 |
73.07%
|
|
|
|
831 - Document Validator | 531 |
26.37%
|
124 |
54.84%
|
|
|
|
832 - Financial Risk | 705 |
19.29%
|
168 |
65.48%
|
|
|
|
833 - Water Falls | 3903 |
39.94%
|
1463 |
81.61%
|
|
|
|
834 - Continued Fractions | 12829 |
64.03%
|
6546 |
95.29%
|
|
|
|
835 - Square of Primes | 1522 |
22.80%
|
314 |
55.10%
|
|
|
|
836 - Largest Submatrix | 14835 |
35.00%
|
4631 |
83.74%
|
|
|
|
837 - Light and Transparencies | 5382 |
37.72%
|
1674 |
85.78%
|
|
|
|
838 - Worm World | 2666 |
15.08%
|
488 |
39.34%
|
|
|
|
839 - Not so Mobile | 26129 |
36.86%
|
4491 |
87.71%
|
|
|
|
840 - Deadlock Detection | 836 |
23.80%
|
250 |
64.80%
|
|
|
|
841 - Snake | 1230 |
10.98%
|
128 |
49.22%
|
|
|
|
842 - Crossword Puzzles | 361 |
27.70%
|
95 |
58.95%
|
|
|
|
843 - Crypt Kicker | 22544 |
23.06%
|
4330 |
66.84%
|
|
|
|
844 - Pousse | 611 |
37.97%
|
229 |
70.31%
|
|
|
|
845 - Gas Station Numbers | 1898 |
26.13%
|
496 |
69.15%
|
|
|
|
846 - Steps | 20193 |
48.77%
|
7693 |
90.00%
|
|
|
|
847 - A Multiplication Game | 17855 |
52.24%
|
7914 |
88.74%
|
|
|
|
848 - Fmt | 5084 |
21.26%
|
1089 |
64.28%
|
|
|
|
849 - Radar Tracking | 922 |
9.33%
|
116 |
28.45%
|
|
|
|
850 - Crypt Kicker II | 20204 |
22.40%
|
4291 |
70.99%
|
|
|
|
851 - Maze | 2363 |
23.02%
|
287 |
53.66%
|
|
|
|
852 - Deciding victory in Go | 3314 |
56.58%
|
1474 |
93.08%
|
|
|
|
853 - DVD Subtitles | 544 |
20.40%
|
109 |
66.97%
|
|
|
|
854 - Worse Code | 354 |
16.95%
|
61 |
55.74%
|
|
|
|
855 - Lunch in Grid City | 9617 |
35.44%
|
2691 |
86.21%
|
|
|
|
856 - The Vigenère Cipher | 914 |
42.56%
|
369 |
77.24%
|
|
|
|
857 - Quantiser | 1005 |
41.69%
|
341 |
85.34%
|
|
|
|
858 - Berry Picking | 1448 |
41.92%
|
479 |
87.47%
|
|
|
|
859 - Chinese Checkers | 996 |
29.42%
|
288 |
80.21%
|
|
|
|
860 - Entropy Text Analyzer | 4155 |
26.67%
|
855 |
78.25%
|
|
|
|
861 - Little Bishops | 16088 |
35.34%
|
4175 |
79.47%
|
|
|
|
862 - Origami | 241 |
16.60%
|
50 |
64.00%
|
|
|
|
863 - Process Scheduling | 496 |
2.42%
|
50 |
8.00%
|
|
|
|
864 - Scheme Pretty-Printing | 131 |
34.35%
|
78 |
52.56%
|
|
|
|
865 - Substitution Cypher | 5949 |
28.66%
|
1540 |
80.32%
|
|
|
|
866 - Intersecting Line Segments | 3411 |
44.74%
|
1057 |
86.28%
|
|
|
|
867 - Storing Images in a Sequence | 78 |
1.28%
|
37 |
2.70%
|
|
|
|
868 - Numerical Maze | 2250 |
28.67%
|
614 |
77.69%
|
|
|
|
869 - Airline Comparison | 3489 |
43.62%
|
1221 |
83.95%
|
|
|
|
870 - Intersecting Rectangles | 647 |
29.21%
|
196 |
79.59%
|
|
|
|
871 - Counting Cells in a Blob | 15965 |
31.80%
|
3171 |
89.97%
|
|
|
|
872 - Ordering | 8449 |
42.21%
|
2746 |
92.50%
|
|
|
|
873 - Loan (II) | 355 |
29.30%
|
105 |
76.19%
|
|
|
|
874 - 2D Representations | 561 |
27.99%
|
158 |
59.49%
|
|
|
|
875 - Monopoly | 57 |
1.75%
|
39 |
2.56%
|
|
|
|
876 - Balanced Expressions | 91 |
4.40%
|
47 |
6.38%
|
|
|
|
877 - Offset Polygons | 347 |
26.80%
|
100 |
78.00%
|
|
|
|
878 - Rotating Tetris Pieces | 522 |
26.44%
|
88 |
67.05%
|
|
|
|
879 - Circuit Nets | 1784 |
23.37%
|
321 |
71.65%
|
|
|
|
880 - Cantor Fractions | 9049 |
31.43%
|
2227 |
81.01%
|
|
|
|
881 - Points, Polygons and Containers | 616 |
26.14%
|
152 |
75.66%
|
|
|
|
882 - The Mailbox Manufacturers Problem | 1487 |
74.45%
|
733 |
94.54%
|
|
|
|
883 - Overlapping Rectangles | 339 |
33.04%
|
113 |
76.99%
|
|
|
|
884 - Factorial Factors | 14625 |
45.03%
|
3561 |
85.00%
|
|
|
|
885 - Telephone Directory Alphabetization | 442 |
7.01%
|
56 |
39.29%
|
|
|
|
886 - Named Extension Dialing | 799 |
30.41%
|
222 |
81.98%
|
|
|
|
887 - Revolutionary Calendar | 439 |
15.72%
|
50 |
60.00%
|
|
|
|
888 - Donkey | 409 |
15.65%
|
72 |
34.72%
|
|
|
|
889 - Islands | 191 |
36.13%
|
54 |
62.96%
|
|
|
|
890 - Maze (II) | 417 |
27.10%
|
118 |
70.34%
|
|
|
|
891 - Syntrax | 218 |
25.69%
|
56 |
75.00%
|
|
|
|
892 - Finding words | 2455 |
35.80%
|
894 |
75.06%
|
|
|
|
893 - Y3K Problem | 5102 |
50.27%
|
2264 |
91.03%
|
|
|
|
894 - Juggling Trams | 83 |
24.10%
|
29 |
48.28%
|
|
|
|
895 - Word Problem | 4501 |
59.05%
|
2199 |
93.45%
|
|
|
|
896 - Board Game | 155 |
8.39%
|
39 |
20.51%
|
|
|
|
897 - Anagrammatic Primes | 5206 |
46.27%
|
1693 |
91.14%
|
|
|
|
898 - Hole Cutter | 379 |
29.55%
|
93 |
68.82%
|
|
|
|
899 - Colour Circles | 428 |
44.39%
|
151 |
84.77%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |