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 % | ||||
|
11100 - The Trip, 2007 | 12157 |
33.98%
|
2578 |
84.45%
|
|
|
11101 - Mall Mania | 5453 |
34.15%
|
1399 |
86.49%
|
|
|
|
11102 - Moonshine | 623 |
20.87%
|
113 |
50.44%
|
|
|
|
11103 - WFF 'N PROOF | 1477 |
49.56%
|
595 |
91.93%
|
|
|
|
11104 - Cousins | 442 |
39.59%
|
171 |
75.44%
|
|
|
|
11105 - Semi-prime H-numbers | 3558 |
56.27%
|
1311 |
89.55%
|
|
|
|
11106 - Rectilinear Polygon | 760 |
35.53%
|
262 |
76.72%
|
|
|
|
11107 - Life Forms | 11017 |
27.73%
|
1294 |
76.82%
|
|
|
|
11108 - Tautology | 1661 |
51.23%
|
700 |
93.43%
|
|
|
|
11109 - Rinse | 262 |
39.31%
|
97 |
75.26%
|
|
|
|
11110 - Equidivisions | 8323 |
31.86%
|
2241 |
83.80%
|
|
|
|
11111 - Generalized Matrioshkas | 11725 |
32.93%
|
2463 |
88.19%
|
|
|
|
11112 - Babylonian Roulette | 526 |
54.37%
|
264 |
93.18%
|
|
|
|
11113 - Continuous Fractions | 1166 |
16.04%
|
233 |
53.65%
|
|
|
|
11114 - Polygon Encoder | 645 |
15.97%
|
125 |
52.00%
|
|
|
|
11115 - Uncle Jack | 4121 |
48.26%
|
1611 |
89.32%
|
|
|
|
11116 - Babel Towers | 530 |
29.81%
|
164 |
71.95%
|
|
|
|
11117 - Little Quilt | 453 |
34.88%
|
158 |
86.08%
|
|
|
|
11118 - Prisoners, Boxes and Pieces of Paper | 369 |
37.13%
|
162 |
67.28%
|
|
|
|
11119 - Chemical Attraction | 380 |
32.37%
|
106 |
67.92%
|
|
|
|
11120 - Very Funny Mr. Feynman | 290 |
43.45%
|
108 |
72.22%
|
|
|
|
11121 - Base -2 | 6106 |
58.07%
|
2472 |
94.34%
|
|
|
|
11122 - Tri Tri | 1989 |
19.05%
|
470 |
59.15%
|
|
|
|
11123 - Counting Trapizoid | 724 |
24.86%
|
169 |
65.68%
|
|
|
|
11124 - Troubles for Modern Days Problemsetters | 506 |
33.40%
|
130 |
73.08%
|
|
|
|
11125 - Arrange Some Marbles | 1502 |
38.42%
|
421 |
85.99%
|
|
|
|
11126 - Relaxed Golf | 481 |
37.84%
|
107 |
78.50%
|
|
|
|
11127 - Triple-Free Binary Strings | 1272 |
55.42%
|
488 |
78.69%
|
|
|
|
11128 - Faulty Computer | 509 |
36.15%
|
101 |
76.24%
|
|
|
|
11129 - An antiarithmetic permutation | 4064 |
48.11%
|
698 |
87.39%
|
|
|
|
11130 - Billiard bounces | 2206 |
69.27%
|
1222 |
94.76%
|
|
|
|
11131 - Close Relatives | 489 |
52.35%
|
225 |
89.33%
|
|
|
|
11132 - Dice from pennies | 709 |
43.72%
|
333 |
80.18%
|
|
|
|
11133 - Eigensequence | 858 |
72.49%
|
505 |
96.44%
|
|
|
|
11134 - Fabled Rooks | 9384 |
40.43%
|
1327 |
86.96%
|
|
|
|
11135 - Gopher that walks and swims | 110 |
43.64%
|
46 |
67.39%
|
|
|
|
11136 - Hoax or what | 18965 |
38.42%
|
4430 |
89.62%
|
|
|
|
11137 - Ingenuous Cubrency | 12852 |
69.23%
|
5515 |
97.41%
|
|
|
|
11138 - Nuts and Bolts | 3903 |
56.93%
|
1466 |
92.29%
|
|
|
|
11139 - Counting Quadrilaterals | 146 |
50.00%
|
70 |
74.29%
|
|
|
|
11140 - Little Ali's Little Brother! | 1286 |
31.96%
|
394 |
84.26%
|
|
|
|
11141 - Sugar Cubes | 214 |
21.03%
|
63 |
57.14%
|
|
|
|
11142 - MineSweeper II | 413 |
8.96%
|
101 |
30.69%
|
|
|
|
11143 - Subtitles | 71 |
15.49%
|
27 |
37.04%
|
|
|
|
11144 - S.O.S. | 576 |
18.06%
|
106 |
60.38%
|
|
|
|
11145 - AvreniM | 129 |
14.73%
|
41 |
36.59%
|
|
|
|
11146 - Insurrection | 402 |
24.63%
|
85 |
71.76%
|
|
|
|
11147 - KuPellaKeS BST | 910 |
43.19%
|
310 |
88.71%
|
|
|
|
11148 - Moliu Fractions | 1112 |
37.05%
|
408 |
84.31%
|
|
|
|
11149 - Power of Matrix | 7742 |
25.26%
|
942 |
78.98%
|
|
|
|
11150 - Cola | 44377 |
47.12%
|
14861 |
93.14%
|
|
|
|
11151 - Longest Palindrome | 24264 |
30.57%
|
4743 |
83.22%
|
|
|
|
11152 - Colourful Flowers | 20214 |
38.02%
|
5248 |
91.27%
|
|
|
|
11153 - Museums | 875 |
26.74%
|
210 |
70.48%
|
|
|
|
11154 - An Octal World | 212 |
10.38%
|
36 |
44.44%
|
|
|
|
11155 - Be Efficient | 1609 |
45.49%
|
541 |
83.73%
|
|
|
|
11156 - Continuous Drawing | 500 |
25.60%
|
122 |
68.03%
|
|
|
|
11157 - Dynamic Frog | 6495 |
51.75%
|
2227 |
90.75%
|
|
|
|
11158 - Elegant Permuted Sum | 1133 |
40.07%
|
462 |
81.17%
|
|
|
|
11159 - Factors and Multiples | 6553 |
29.33%
|
1439 |
86.80%
|
|
|
|
11160 - Going Together | 857 |
44.69%
|
250 |
81.60%
|
|
|
|
11161 - Help My Brother (II) | 1616 |
54.76%
|
771 |
91.44%
|
|
|
|
11162 - Independent Attacking Zones | 543 |
56.72%
|
196 |
89.80%
|
|
|
|
11163 - Jaguar King | 1155 |
33.59%
|
197 |
75.13%
|
|
|
|
11164 - Kingdom Division | 887 |
37.20%
|
311 |
84.24%
|
|
|
|
11165 - Galactic Travel | 561 |
34.58%
|
161 |
75.78%
|
|
|
|
11166 - Power Signs | 638 |
34.48%
|
217 |
76.04%
|
|
|
|
11167 - Monkeys in the Emei Mountain | 4565 |
22.52%
|
754 |
71.35%
|
|
|
|
11168 - Airport | 3933 |
35.83%
|
527 |
84.25%
|
|
|
|
11169 - Deal or No Deal | 162 |
59.88%
|
64 |
81.25%
|
|
|
|
11170 - Cos(NA) | 668 |
50.30%
|
305 |
90.49%
|
|
|
|
11171 - SMS | 1095 |
17.17%
|
233 |
47.64%
|
|
|
|
11172 - Relational Operator | 169607 |
56.59%
|
57946 |
95.77%
|
|
|
|
11173 - Grey Codes | 5961 |
72.77%
|
2739 |
95.03%
|
|
|
|
11174 - Stand in a Line | 2313 |
45.57%
|
490 |
86.94%
|
|
|
|
11175 - From D to E and Back | 1787 |
52.88%
|
439 |
87.02%
|
|
|
|
11176 - Winning Streak | 1733 |
53.84%
|
627 |
88.04%
|
|
|
|
11177 - Fighting Against a Polygonal Monster | 1339 |
29.20%
|
196 |
69.39%
|
|
|
|
11178 - Morley's Theorem | 3212 |
71.98%
|
791 |
96.08%
|
|
|
|
11179 - Bit Stream | 690 |
29.71%
|
106 |
53.77%
|
|
|
|
11180 - Base i-1 | 593 |
70.83%
|
291 |
94.50%
|
|
|
|
11181 - Probability|Given | 6377 |
57.21%
|
1608 |
96.02%
|
|
|
|
11182 - Zeroes III | 775 |
26.32%
|
202 |
75.25%
|
|
|
|
11183 - Teen Girl Squad | 5212 |
35.82%
|
709 |
69.68%
|
|
|
|
11184 - Joyful Ride | 393 |
67.43%
|
211 |
89.10%
|
|
|
|
11185 - Ternary | 31916 |
41.15%
|
10219 |
94.63%
|
|
|
|
11186 - Circum Triangle | 1794 |
44.65%
|
383 |
84.07%
|
|
|
|
11187 - Water Crisis | 590 |
24.58%
|
122 |
59.02%
|
|
|
|
11188 - A Strange Opera House | 17 |
35.29%
|
12 |
50.00%
|
|
|
|
11189 - A Simple Pendulum | 359 |
24.23%
|
91 |
64.84%
|
|
|
|
11190 - Series of Powers | 522 |
31.80%
|
129 |
79.07%
|
|
|
|
11191 - Square | 1211 |
29.98%
|
260 |
80.00%
|
|
|
|
11192 - Group Reverse | 21843 |
55.67%
|
8967 |
95.72%
|
|
|
|
11193 - Infinix | 211 |
26.54%
|
60 |
70.00%
|
|
|
|
11194 - Stone Grid | 340 |
37.65%
|
58 |
67.24%
|
|
|
|
11195 - Another n-Queen Problem | 10088 |
38.90%
|
2382 |
71.62%
|
|
|
|
11196 - Birthday Cake | 768 |
27.60%
|
197 |
65.99%
|
|
|
|
11197 - Counting RNA sequences | 167 |
32.93%
|
49 |
57.14%
|
|
|
|
11198 - Dancing Digits | 1595 |
49.72%
|
553 |
89.15%
|
|
|
|
11199 - Equations in Disguise | 396 |
15.91%
|
57 |
40.35%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |