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
Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
|
11100 - The Trip, 2007 | 12263 |
33.96%
|
2584 |
84.48%
|
|
|
|
11101 - Mall Mania | 5555 |
34.02%
|
1403 |
86.46%
|
|
|
|
11102 - Moonshine | 623 |
20.87%
|
113 |
50.44%
|
|
|
|
11103 - WFF 'N PROOF | 1480 |
49.66%
|
598 |
91.97%
|
|
|
|
11104 - Cousins | 455 |
39.56%
|
174 |
75.86%
|
|
|
|
11105 - Semi-prime H-numbers | 3581 |
56.35%
|
1320 |
89.55%
|
|
|
|
11106 - Rectilinear Polygon | 762 |
35.70%
|
263 |
76.81%
|
|
|
|
11107 - Life Forms | 11071 |
27.70%
|
1300 |
76.69%
|
|
|
|
11108 - Tautology | 1670 |
51.26%
|
705 |
93.48%
|
|
|
|
11109 - Rinse | 262 |
39.31%
|
97 |
75.26%
|
|
|
|
11110 - Equidivisions | 8367 |
31.85%
|
2248 |
83.81%
|
|
|
|
11111 - Generalized Matrioshkas | 11828 |
33.07%
|
2475 |
88.20%
|
|
|
|
11112 - Babylonian Roulette | 542 |
54.24%
|
267 |
93.26%
|
|
|
|
11113 - Continuous Fractions | 1194 |
16.67%
|
240 |
56.25%
|
|
|
|
11114 - Polygon Encoder | 649 |
16.02%
|
125 |
52.80%
|
|
|
|
11115 - Uncle Jack | 4139 |
48.35%
|
1615 |
89.35%
|
|
|
|
11116 - Babel Towers | 544 |
30.33%
|
166 |
74.10%
|
|
|
|
11117 - Little Quilt | 459 |
35.08%
|
160 |
85.62%
|
|
|
|
11118 - Prisoners, Boxes and Pieces of Paper | 371 |
37.47%
|
164 |
67.68%
|
|
|
|
11119 - Chemical Attraction | 380 |
32.37%
|
106 |
67.92%
|
|
|
|
11120 - Very Funny Mr. Feynman | 292 |
43.84%
|
110 |
72.73%
|
|
|
|
11121 - Base -2 | 6162 |
58.13%
|
2476 |
94.35%
|
|
|
|
11122 - Tri Tri | 1992 |
19.03%
|
470 |
59.15%
|
|
|
|
11123 - Counting Trapizoid | 729 |
25.10%
|
172 |
65.70%
|
|
|
|
11124 - Troubles for Modern Days Problemsetters | 511 |
34.05%
|
134 |
73.88%
|
|
|
|
11125 - Arrange Some Marbles | 1517 |
38.69%
|
422 |
86.02%
|
|
|
|
11126 - Relaxed Golf | 483 |
38.10%
|
109 |
78.90%
|
|
|
|
11127 - Triple-Free Binary Strings | 1275 |
55.45%
|
490 |
78.78%
|
|
|
|
11128 - Faulty Computer | 511 |
36.40%
|
103 |
76.70%
|
|
|
|
11129 - An antiarithmetic permutation | 4068 |
48.13%
|
699 |
87.41%
|
|
|
|
11130 - Billiard bounces | 2212 |
69.35%
|
1228 |
94.79%
|
|
|
|
11131 - Close Relatives | 493 |
52.54%
|
228 |
89.47%
|
|
|
|
11132 - Dice from pennies | 714 |
43.70%
|
336 |
80.06%
|
|
|
|
11133 - Eigensequence | 860 |
72.56%
|
506 |
96.44%
|
|
|
|
11134 - Fabled Rooks | 9431 |
40.44%
|
1334 |
87.03%
|
|
|
|
11135 - Gopher that walks and swims | 114 |
43.86%
|
47 |
68.09%
|
|
|
|
11136 - Hoax or what | 19157 |
38.44%
|
4458 |
89.61%
|
|
|
|
11137 - Ingenuous Cubrency | 12865 |
69.24%
|
5519 |
97.41%
|
|
|
|
11138 - Nuts and Bolts | 3906 |
56.94%
|
1468 |
92.30%
|
|
|
|
11139 - Counting Quadrilaterals | 146 |
50.00%
|
70 |
74.29%
|
|
|
|
11140 - Little Ali's Little Brother! | 1288 |
32.07%
|
396 |
84.34%
|
|
|
|
11141 - Sugar Cubes | 216 |
21.76%
|
65 |
58.46%
|
|
|
|
11142 - MineSweeper II | 417 |
9.59%
|
101 |
32.67%
|
|
|
|
11143 - Subtitles | 73 |
16.44%
|
27 |
40.74%
|
|
|
|
11144 - S.O.S. | 579 |
17.96%
|
107 |
59.81%
|
|
|
|
11145 - AvreniM | 133 |
16.54%
|
41 |
39.02%
|
|
|
|
11146 - Insurrection | 402 |
24.63%
|
85 |
71.76%
|
|
|
|
11147 - KuPellaKeS BST | 923 |
43.45%
|
315 |
88.57%
|
|
|
|
11148 - Moliu Fractions | 1115 |
37.04%
|
409 |
84.35%
|
|
|
|
11149 - Power of Matrix | 7750 |
25.28%
|
942 |
78.98%
|
|
|
|
11150 - Cola | 45047 |
47.38%
|
14973 |
93.17%
|
|
|
|
11151 - Longest Palindrome | 24460 |
30.63%
|
4762 |
83.20%
|
|
|
|
11152 - Colourful Flowers | 20322 |
37.99%
|
5250 |
91.26%
|
|
|
|
11153 - Museums | 875 |
26.74%
|
210 |
70.48%
|
|
|
|
11154 - An Octal World | 220 |
10.00%
|
37 |
43.24%
|
|
|
|
11155 - Be Efficient | 1615 |
45.63%
|
544 |
83.82%
|
|
|
|
11156 - Continuous Drawing | 507 |
25.64%
|
123 |
68.29%
|
|
|
|
11157 - Dynamic Frog | 6589 |
51.81%
|
2233 |
90.77%
|
|
|
|
11158 - Elegant Permuted Sum | 1141 |
39.88%
|
463 |
81.21%
|
|
|
|
11159 - Factors and Multiples | 6575 |
29.31%
|
1443 |
86.83%
|
|
|
|
11160 - Going Together | 881 |
44.49%
|
253 |
81.82%
|
|
|
|
11161 - Help My Brother (II) | 1616 |
54.76%
|
771 |
91.44%
|
|
|
|
11162 - Independent Attacking Zones | 543 |
56.72%
|
196 |
89.80%
|
|
|
|
11163 - Jaguar King | 1156 |
33.65%
|
198 |
75.25%
|
|
|
|
11164 - Kingdom Division | 890 |
37.30%
|
312 |
84.29%
|
|
|
|
11165 - Galactic Travel | 563 |
34.81%
|
162 |
75.93%
|
|
|
|
11166 - Power Signs | 639 |
34.43%
|
218 |
75.69%
|
|
|
|
11167 - Monkeys in the Emei Mountain | 4592 |
22.54%
|
760 |
71.58%
|
|
|
|
11168 - Airport | 3971 |
36.11%
|
532 |
84.40%
|
|
|
|
11169 - Deal or No Deal | 166 |
60.84%
|
65 |
81.54%
|
|
|
|
11170 - Cos(NA) | 670 |
50.45%
|
307 |
90.55%
|
|
|
|
11171 - SMS | 1101 |
17.35%
|
234 |
47.86%
|
|
|
|
11172 - Relational Operator | 171587 |
56.67%
|
58121 |
95.77%
|
|
|
|
11173 - Grey Codes | 6005 |
72.76%
|
2753 |
95.06%
|
|
|
|
11174 - Stand in a Line | 2318 |
45.56%
|
490 |
86.94%
|
|
|
|
11175 - From D to E and Back | 1810 |
52.82%
|
444 |
86.71%
|
|
|
|
11176 - Winning Streak | 1757 |
53.44%
|
631 |
88.11%
|
|
|
|
11177 - Fighting Against a Polygonal Monster | 1341 |
29.31%
|
197 |
69.54%
|
|
|
|
11178 - Morley's Theorem | 3221 |
72.06%
|
792 |
96.09%
|
|
|
|
11179 - Bit Stream | 690 |
29.71%
|
106 |
53.77%
|
|
|
|
11180 - Base i-1 | 594 |
70.88%
|
291 |
94.50%
|
|
|
|
11181 - Probability|Given | 6460 |
57.24%
|
1623 |
95.87%
|
|
|
|
11182 - Zeroes III | 776 |
26.42%
|
202 |
75.25%
|
|
|
|
11183 - Teen Girl Squad | 5368 |
35.92%
|
714 |
69.89%
|
|
|
|
11184 - Joyful Ride | 394 |
67.51%
|
211 |
89.10%
|
|
|
|
11185 - Ternary | 32059 |
41.13%
|
10232 |
94.62%
|
|
|
|
11186 - Circum Triangle | 1802 |
44.62%
|
383 |
84.07%
|
|
|
|
11187 - Water Crisis | 590 |
24.58%
|
122 |
59.02%
|
|
|
|
11188 - A Strange Opera House | 24 |
37.50%
|
18 |
50.00%
|
|
|
|
11189 - A Simple Pendulum | 359 |
24.23%
|
91 |
64.84%
|
|
|
|
11190 - Series of Powers | 531 |
32.39%
|
133 |
79.70%
|
|
|
|
11191 - Square | 1212 |
30.03%
|
261 |
80.08%
|
|
|
|
11192 - Group Reverse | 22029 |
55.79%
|
8982 |
95.72%
|
|
|
|
11193 - Infinix | 211 |
26.54%
|
60 |
70.00%
|
|
|
|
11194 - Stone Grid | 344 |
37.21%
|
59 |
66.10%
|
|
|
|
11195 - Another n-Queen Problem | 10169 |
39.07%
|
2395 |
71.69%
|
|
|
|
11196 - Birthday Cake | 783 |
27.71%
|
199 |
66.33%
|
|
|
|
11197 - Counting RNA sequences | 175 |
34.86%
|
51 |
60.78%
|
|
|
|
11198 - Dancing Digits | 1611 |
49.53%
|
555 |
89.19%
|
|
|
|
11199 - Equations in Disguise | 407 |
16.71%
|
59 |
47.46%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |


