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 % | ||||
|
300 - Maya Calendar | 13415 |
34.95%
|
3537 |
82.87%
|
|
|
|
301 - Transportation | 8382 |
34.37%
|
2272 |
78.83%
|
|
|
|
302 - John's trip | 12481 |
24.01%
|
1881 |
67.04%
|
|
|
|
303 - Pipe | 1845 |
33.17%
|
512 |
78.71%
|
|
|
|
304 - Department | 833 |
8.16%
|
214 |
18.69%
|
|
|
|
305 - Joseph | 19842 |
49.26%
|
6823 |
88.73%
|
|
|
|
306 - Cipher | 11472 |
22.17%
|
2474 |
63.22%
|
|
|
|
307 - Sticks | 30221 |
21.81%
|
5091 |
58.36%
|
|
|
|
308 - Tin Cutter | 1724 |
34.34%
|
506 |
75.89%
|
|
|
|
309 - FORCAL | 785 |
41.66%
|
302 |
77.48%
|
|
|
|
310 - L--system | 3191 |
18.61%
|
549 |
45.36%
|
|
|
|
311 - Packets | 11425 |
36.34%
|
3375 |
81.75%
|
|
|
312 - Crosswords (II) | 3010 |
19.90%
|
706 |
45.89%
|
|
|
|
313 - Intervals | 2463 |
31.55%
|
681 |
79.59%
|
|
|
|
314 - Robot | 8906 |
30.95%
|
2186 |
76.26%
|
|
|
|
315 - Network | 37099 |
43.40%
|
8420 |
89.30%
|
|
|
|
316 - Stars | 1225 |
12.08%
|
215 |
51.16%
|
|
|
|
317 - Hexagon | 799 |
31.54%
|
298 |
52.68%
|
|
|
|
318 - Domino Effect | 9788 |
28.32%
|
1802 |
78.86%
|
|
|
|
319 - Pendulum | 753 |
24.44%
|
193 |
74.09%
|
|
|
|
320 - Border | 4774 |
43.55%
|
2125 |
81.04%
|
|
|
|
321 - The New Villa | 7144 |
31.82%
|
1427 |
81.08%
|
|
|
|
322 - Ships | 714 |
17.93%
|
187 |
35.83%
|
|
|
|
323 - Jury Compromise | 6082 |
23.81%
|
1180 |
62.03%
|
|
|
|
324 - Factorial Frequencies | 17265 |
57.31%
|
7800 |
90.21%
|
|
|
|
325 - Identifying Legal Pascal Real Constants | 9090 |
32.12%
|
2172 |
79.47%
|
|
|
|
326 - Extrapolation Using a Difference Table | 3158 |
62.86%
|
1804 |
90.41%
|
|
|
|
327 - Evaluating Simple C Expressions | 7775 |
35.67%
|
1757 |
76.61%
|
|
|
|
328 - The Finite State Text Processing Machine | 900 |
28.67%
|
291 |
69.07%
|
|
|
|
329 - PostScript Emulation | 964 |
17.32%
|
230 |
21.30%
|
|
|
|
330 - Inventory Maintenance | 2539 |
11.11%
|
557 |
30.88%
|
|
|
|
331 - Mapping the Swaps | 4382 |
56.50%
|
1992 |
87.45%
|
|
|
|
332 - Rational Numbers from Repeating Fractions | 15177 |
24.17%
|
2593 |
71.85%
|
|
|
|
333 - Recognizing Good ISBNs | 21483 |
16.78%
|
3394 |
52.74%
|
|
|
|
334 - Identifying Concurrent Events | 3690 |
28.08%
|
1209 |
68.90%
|
|
|
|
335 - Processing MX Records | 1850 |
30.49%
|
427 |
76.35%
|
|
|
|
336 - A Node Too Far | 47854 |
31.06%
|
9792 |
83.73%
|
|
|
|
337 - Interpreting Control Sequences | 3788 |
58.61%
|
1656 |
91.49%
|
|
|
|
338 - Long Multiplication | 6805 |
11.36%
|
1461 |
34.02%
|
|
|
|
339 - SameGame Simulation | 2325 |
31.66%
|
791 |
61.44%
|
|
|
|
340 - Master-Mind Hints | 33301 |
45.02%
|
7709 |
90.22%
|
|
|
|
341 - Non-Stop Travel | 7832 |
51.38%
|
2902 |
91.45%
|
|
|
|
342 - HTML Syntax Checking | 1921 |
12.65%
|
295 |
37.63%
|
|
|
|
343 - What Base Is This? | 16871 |
33.59%
|
4385 |
81.82%
|
|
|
|
344 - Roman Digititis | 14501 |
60.73%
|
7655 |
92.88%
|
|
|
|
345 - It's Ir-Resist-Able! | 1943 |
28.15%
|
585 |
70.60%
|
|
|
|
346 - Getting Chorded | 2113 |
45.24%
|
746 |
72.79%
|
|
|
|
347 - Run | 6159 |
32.07%
|
2598 |
56.66%
|
|
|
|
348 - Optimal Array Multiplication Sequence | 18889 |
43.46%
|
5171 |
89.02%
|
|
|
|
349 - Transferable Voting (II) | 1620 |
38.21%
|
663 |
74.21%
|
|
|
|
350 - Pseudo-Random Numbers | 21093 |
55.10%
|
8562 |
91.05%
|
|
|
|
351 - "Cheapest" Scores | 148 |
33.78%
|
44 |
40.91%
|
|
|
|
352 - The Seasonal War | 32229 |
53.46%
|
11149 |
92.80%
|
|
|
|
353 - Pesky Palindromes | 12611 |
47.68%
|
4397 |
88.79%
|
|
|
|
354 - Crazy Calculator | 420 |
16.90%
|
86 |
36.05%
|
|
|
|
355 - The Bases Are Loaded | 19782 |
25.63%
|
4204 |
79.09%
|
|
|
|
356 - Square Pegs And Round Holes | 11115 |
31.93%
|
3302 |
64.29%
|
|
|
|
357 - Let Me Count The Ways | 59305 |
34.88%
|
14511 |
82.49%
|
|
|
|
358 - Don't Have A Cow | 3606 |
38.46%
|
602 |
54.15%
|
|
|
|
359 - Sex Assignments And Breeding Experiments | 1160 |
16.81%
|
141 |
51.06%
|
|
|
|
360 - Don't Get Hives From This One! | 141 |
64.54%
|
45 |
57.78%
|
|
|
|
361 - Cops and Robbers | 8232 |
11.47%
|
1076 |
42.75%
|
|
|
|
362 - 18,000 Seconds Remaining | 9001 |
24.23%
|
1883 |
75.15%
|
|
|
|
363 - Approximate Matches | 110 |
45.45%
|
50 |
54.00%
|
|
|
|
364 - Constitutional Computing | 267 |
10.11%
|
44 |
20.45%
|
|
|
|
365 - Welfare Reform | 1009 |
13.97%
|
182 |
47.80%
|
|
|
|
366 - Cutting Up | 784 |
37.50%
|
347 |
63.11%
|
|
|
|
367 - Halting Factor Replacement Systems | 663 |
19.16%
|
161 |
44.72%
|
|
|
|
368 - Indexing Web Pages | 134 |
14.93%
|
44 |
36.36%
|
|
|
|
369 - Combinations | 49632 |
44.83%
|
16246 |
90.10%
|
|
|
|
370 - Bingo | 910 |
17.58%
|
198 |
49.49%
|
|
|
|
371 - Ackermann Functions | 55392 |
25.04%
|
10067 |
77.79%
|
|
|
|
372 - WhatFix Notation | 386 |
45.60%
|
177 |
62.15%
|
|
|
|
373 - Romulan Spelling | 1582 |
32.05%
|
320 |
52.81%
|
|
|
|
374 - Big Mod | 71833 |
47.02%
|
22402 |
89.51%
|
|
|
|
375 - Inscribed Circles and Isosceles Triangles | 6605 |
30.64%
|
1439 |
77.90%
|
|
|
|
376 - More Triangles ... THE AMBIGUOUS CASE | 1442 |
13.94%
|
289 |
42.56%
|
|
|
|
377 - Cowculations | 3318 |
60.46%
|
1886 |
90.08%
|
|
|
|
378 - Intersecting Lines | 20160 |
41.90%
|
5564 |
84.58%
|
|
|
|
379 - Hi-Q | 1381 |
65.46%
|
891 |
88.10%
|
|
|
|
380 - Call Forwarding | 3336 |
47.45%
|
1229 |
86.98%
|
|
|
|
381 - Making the Grade | 1493 |
54.39%
|
852 |
80.99%
|
|
|
|
382 - Perfection | 69109 |
35.06%
|
20276 |
86.44%
|
|
|
|
383 - Shipping Routes | 9758 |
39.24%
|
3535 |
82.18%
|
|
|
|
384 - Slurpys | 6295 |
47.91%
|
2044 |
83.90%
|
|
|
|
385 - DNA Translation | 1677 |
34.23%
|
515 |
72.23%
|
|
|
|
386 - Perfect Cubes | 18759 |
48.70%
|
6977 |
88.39%
|
|
|
|
387 - A Puzzling Problem | 2881 |
30.02%
|
728 |
61.26%
|
|
|
|
388 - Galactic Import | 1590 |
60.75%
|
869 |
87.80%
|
|
|
|
389 - Basically Speaking | 26444 |
29.24%
|
6217 |
77.08%
|
|
|
|
390 - Letter Sequence Analysis | 1007 |
25.62%
|
403 |
48.14%
|
|
|
|
391 - Mark-up | 4678 |
30.06%
|
1174 |
75.72%
|
|
|
|
392 - Polynomial Showdown | 20311 |
30.05%
|
5823 |
76.13%
|
|
|
|
393 - The Doors | 1890 |
44.07%
|
771 |
83.27%
|
|
|
|
394 - Mapmaker | 6759 |
59.34%
|
3411 |
93.20%
|
|
|
|
395 - Board Silly | 1189 |
30.03%
|
563 |
57.02%
|
|
|
|
396 - Top Dog | 577 |
17.68%
|
170 |
25.29%
|
|
|
|
397 - Equation Elation | 3229 |
47.82%
|
1168 |
87.07%
|
|
|
|
398 - 18-Wheeler Caravans (aka Semigroups) | 1002 |
13.87%
|
405 |
29.38%
|
|
|
|
399 - Another Puzzling Problem | 1115 |
29.69%
|
441 |
51.93%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |