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 % | ||||
|
600 - A Duckpin Tournament | 1455 |
16.29%
|
291 |
34.02%
|
|
|
|
601 - The PATH | 5170 |
29.63%
|
1333 |
73.44%
|
|
|
|
602 - What Day Is It? | 10901 |
25.83%
|
1883 |
65.48%
|
|
|
|
603 - Parking Lot | 3653 |
24.28%
|
961 |
50.57%
|
|
|
|
604 - The Boggle Game | 4584 |
31.06%
|
1001 |
63.94%
|
|
|
605 - The Rotating Disk | 695 |
8.78%
|
115 |
28.70%
|
|
|
|
606 - Keeps Going and Going and ... | 729 |
16.46%
|
247 |
44.94%
|
|
|
|
607 - Scheduling Lectures | 7863 |
27.74%
|
1684 |
65.91%
|
|
|
|
608 - Counterfeit Dollar | 9672 |
35.60%
|
3112 |
78.44%
|
|
|
|
609 - Metal Cutting | 1537 |
19.19%
|
335 |
43.88%
|
|
|
|
610 - Street Directions | 9179 |
41.02%
|
2393 |
82.99%
|
|
|
|
611 - Parallel Deadlock | 485 |
15.46%
|
177 |
33.90%
|
|
|
|
612 - DNA Sorting | 47847 |
24.03%
|
9352 |
68.31%
|
|
|
|
613 - Numbers That Count | 2953 |
22.96%
|
904 |
51.00%
|
|
|
|
614 - Mapping the Route | 3115 |
35.76%
|
1125 |
71.82%
|
|
|
|
615 - Is It A Tree? | 24045 |
22.23%
|
4340 |
67.60%
|
|
|
|
616 - Coconuts, Revisited | 13456 |
29.30%
|
2996 |
72.66%
|
|
|
|
617 - Nonstop Travel | 2693 |
46.64%
|
1224 |
85.70%
|
|
|
|
618 - Doing Windows | 1196 |
27.51%
|
429 |
66.67%
|
|
|
|
619 - Numerically Speaking | 4581 |
49.95%
|
1677 |
86.46%
|
|
|
|
620 - Cellular Structure | 4084 |
53.06%
|
1830 |
86.83%
|
|
|
|
621 - Secret Research | 35621 |
47.09%
|
14290 |
90.13%
|
|
|
|
622 - Grammar Evaluation | 3168 |
24.97%
|
1060 |
59.06%
|
|
|
|
623 - 500! | 50306 |
30.67%
|
12743 |
74.93%
|
|
|
|
624 - CD | 50354 |
46.33%
|
11489 |
89.70%
|
|
|
|
625 - Compression | 1547 |
20.04%
|
404 |
59.16%
|
|
|
|
626 - Ecosystem | 3972 |
41.94%
|
1491 |
84.57%
|
|
|
|
627 - The Net | 6867 |
42.64%
|
2281 |
86.37%
|
|
|
|
628 - Passwords | 11325 |
58.45%
|
3911 |
90.54%
|
|
|
|
629 - Test | 555 |
52.61%
|
186 |
74.19%
|
|
|
|
630 - Anagrams (II) | 8541 |
27.50%
|
2328 |
68.90%
|
|
|
|
631 - Microzoft Calendar | 613 |
17.94%
|
151 |
54.30%
|
|
|
|
632 - Compression (II) | 2908 |
25.96%
|
803 |
71.98%
|
|
|
|
633 - A Chess Knight | 3042 |
21.99%
|
656 |
82.47%
|
|
|
|
634 - Polygon | 5616 |
52.87%
|
1974 |
90.58%
|
|
|
|
635 - Clock solitaire | 483 |
56.11%
|
242 |
83.88%
|
|
|
|
636 - Squares (III) | 4632 |
54.43%
|
2254 |
92.37%
|
|
|
|
637 - Booklet Printing | 10001 |
45.04%
|
4077 |
86.68%
|
|
|
|
638 - Finding Rectangles | 2904 |
37.05%
|
916 |
71.72%
|
|
|
|
639 - Don't Get Rooked | 9368 |
59.32%
|
4028 |
91.71%
|
|
|
|
640 - Self Numbers | 16429 |
50.15%
|
6073 |
89.86%
|
|
|
|
641 - Do the Untwist | 2615 |
65.09%
|
1358 |
91.61%
|
|
|
|
642 - Word Amalgamation | 8626 |
55.33%
|
3700 |
92.24%
|
|
|
|
643 - Bulk Mailing | 679 |
18.70%
|
183 |
50.27%
|
|
|
|
644 - Immediate Decodability | 16567 |
44.03%
|
5156 |
91.39%
|
|
|
|
645 - File Mapping | 1212 |
26.24%
|
418 |
58.85%
|
|
|
|
646 - The Gourmet Club | 522 |
14.56%
|
100 |
33.00%
|
|
|
|
647 - Chutes and Ladders | 1647 |
58.89%
|
943 |
83.78%
|
|
|
|
648 - Stamps (II) | 583 |
31.22%
|
233 |
62.23%
|
|
|
|
649 - You Who? | 223 |
21.08%
|
87 |
36.78%
|
|
|
|
650 - Bowl | 815 |
10.80%
|
249 |
23.29%
|
|
|
|
651 - Deck | 1848 |
52.92%
|
925 |
85.62%
|
|
|
|
652 - Eight | 9209 |
18.95%
|
1161 |
52.63%
|
|
|
|
653 - Gizilch | 1154 |
31.28%
|
338 |
68.34%
|
|
|
|
654 - Ratio | 2390 |
29.83%
|
858 |
65.03%
|
|
|
|
655 - Scrabble | 902 |
10.64%
|
280 |
17.50%
|
|
|
|
656 - Optimal Programs | 2101 |
25.46%
|
564 |
64.36%
|
|
|
|
657 - The die is cast | 17481 |
28.49%
|
3666 |
80.25%
|
|
|
|
658 - It's not a Bug, it's a Feature! | 9813 |
32.82%
|
1410 |
83.12%
|
|
|
|
659 - Reflections | 743 |
35.80%
|
287 |
77.00%
|
|
|
|
660 - Going in circles on Alpha Centauri | 600 |
29.67%
|
211 |
66.82%
|
|
|
|
661 - Blowing Fuses | 24062 |
36.34%
|
7830 |
90.20%
|
|
|
|
662 - Fast Food | 5980 |
30.69%
|
1129 |
81.31%
|
|
|
|
663 - Sorting Slides | 5226 |
21.74%
|
1245 |
58.88%
|
|
|
|
664 - Single-Player Games | 699 |
23.89%
|
190 |
70.00%
|
|
|
|
665 - False coin | 7380 |
29.96%
|
2204 |
73.05%
|
|
|
|
666 - Rating | 423 |
8.04%
|
124 |
23.39%
|
|
|
|
667 - Fence | 619 |
18.26%
|
179 |
46.93%
|
|
|
|
668 - Parliament | 3755 |
28.95%
|
1205 |
67.55%
|
|
|
|
669 - Defragment | 1345 |
24.91%
|
322 |
62.42%
|
|
|
|
670 - The dog task | 8190 |
33.85%
|
1453 |
75.09%
|
|
|
|
671 - Spell checker | 4144 |
24.98%
|
965 |
66.01%
|
|
|
|
672 - Gangsters | 2599 |
25.78%
|
637 |
66.09%
|
|
|
|
673 - Parentheses Balance | 190158 |
26.99%
|
25739 |
80.63%
|
|
|
|
674 - Coin Change | 62429 |
48.33%
|
16187 |
91.52%
|
|
|
|
675 - Convex Hull of the Polygon | 2399 |
13.21%
|
403 |
42.43%
|
|
|
|
676 - Horse Step Maze | 1571 |
11.78%
|
291 |
51.20%
|
|
|
|
677 - All Walks of length "n" from the first node | 5399 |
37.01%
|
1650 |
84.00%
|
|
|
|
678 - Schedule of Taiwan Baseball League | 287 |
28.57%
|
123 |
47.15%
|
|
|
|
679 - Dropping Balls | 37276 |
42.21%
|
7757 |
85.68%
|
|
|
|
680 - Movement of Reading Head | 582 |
36.94%
|
217 |
79.26%
|
|
|
|
681 - Convex Hull Finding | 19158 |
26.51%
|
3128 |
74.90%
|
|
|
|
682 - Whoever-pick-the-last-one-lose | 695 |
32.52%
|
206 |
66.02%
|
|
|
|
683 - Character Decoding | 325 |
23.08%
|
121 |
43.80%
|
|
|
|
684 - Integral Determinant | 4343 |
19.80%
|
700 |
57.86%
|
|
|
|
685 - Least Path Cost | 850 |
32.94%
|
273 |
79.85%
|
|
|
|
686 - Goldbach's Conjecture (II) | 29207 |
56.16%
|
11582 |
93.93%
|
|
|
|
687 - Lattice Practices | 452 |
20.80%
|
98 |
56.12%
|
|
|
|
688 - Mobile Phone Coverage | 3290 |
35.78%
|
942 |
83.55%
|
|
|
|
689 - Napoleon's Grumble | 1332 |
13.14%
|
342 |
38.30%
|
|
|
|
690 - Pipeline Scheduling | 2996 |
33.54%
|
311 |
75.24%
|
|
|
|
691 - Triangle Partition | 1553 |
2.12%
|
131 |
15.27%
|
|
|
|
692 - BUT We Need a Diagram | 481 |
22.87%
|
150 |
56.00%
|
|
|
|
693 - Digital Racing Circuit | 423 |
8.04%
|
59 |
18.64%
|
|
|
|
694 - The Collatz Sequence | 41087 |
40.92%
|
13243 |
89.04%
|
|
|
|
695 - Placing the Ops | 1151 |
35.01%
|
207 |
69.57%
|
|
|
|
696 - How Many Knights | 16858 |
38.79%
|
5045 |
89.00%
|
|
|
|
697 - Jack and Jill | 3830 |
13.89%
|
688 |
40.12%
|
|
|
|
698 - Index | 2407 |
11.63%
|
485 |
31.55%
|
|
|
|
699 - The Falling Leaves | 21402 |
40.73%
|
4318 |
84.39%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |