Home

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

Amal AugustineTechBuy

Contribute

Become a patron

PayPal  

1ojudgeapLUjJcnUmze67a4w3TJ6WnPxo

Bitcoin: 

1ojudgeapLUjJcnUm

ze67a4w3TJ6WnPxo 

Browse Problems
Title Total Submissions / Solving % Total Users / Solving %
FILE 11100 - The Trip, 2007 12074
34.02%
2565
84.64%
FILE 11101 - Mall Mania 5402
34.10%
1392
86.42%
FILE 11102 - Moonshine 622
20.90%
112
50.89%
FILE 11103 - WFF 'N PROOF 1476
49.59%
594
92.09%
FILE 11104 - Cousins 441
39.68%
170
75.88%
FILE 11105 - Semi-prime H-numbers 3542
56.24%
1301
89.62%
FILE 11106 - Rectilinear Polygon 749
35.11%
260
76.15%
FILE 11107 - Life Forms 10826
27.45%
1285
76.81%
FILE 11108 - Tautology 1656
51.21%
697
93.54%
FILE 11109 - Rinse 261
39.46%
96
76.04%
FILE 11110 - Equidivisions 8255
31.84%
2232
83.78%
FILE 11111 - Generalized Matrioshkas 11580
32.79%
2451
88.33%
FILE 11112 - Babylonian Roulette 518
54.44%
259
94.21%
FILE 11113 - Continuous Fractions 1165
16.05%
232
53.88%
FILE 11114 - Polygon Encoder 644
15.99%
124
52.42%
FILE 11115 - Uncle Jack 4114
48.25%
1608
89.37%
FILE 11116 - Babel Towers 529
29.87%
163
72.39%
FILE 11117 - Little Quilt 452
34.96%
157
86.62%
FILE 11118 - Prisoners, Boxes and Pieces of Paper 368
37.23%
161
67.70%
FILE 11119 - Chemical Attraction 374
31.82%
104
68.27%
FILE 11120 - Very Funny Mr. Feynman 289
43.60%
107
72.90%
FILE 11121 - Base -2 6080
58.04%
2463
94.40%
FILE 11122 - Tri Tri 1988
19.06%
469
59.28%
FILE 11123 - Counting Trapizoid 716
24.72%
166
66.27%
FILE 11124 - Troubles for Modern Days Problemsetters 505
33.47%
129
73.64%
FILE 11125 - Arrange Some Marbles 1500
38.40%
420
86.19%
FILE 11126 - Relaxed Golf 480
37.92%
106
79.25%
FILE 11127 - Triple-Free Binary Strings 1267
55.33%
486
78.81%
FILE 11128 - Faulty Computer 505
36.04%
97
77.32%
FILE 11129 - An antiarithmetic permutation 4051
48.09%
695
87.48%
FILE 11130 - Billiard bounces 2186
69.35%
1216
94.90%
FILE 11131 - Close Relatives 488
52.46%
224
89.73%
FILE 11132 - Dice from pennies 703
43.53%
327
80.43%
FILE 11133 - Eigensequence 856
72.55%
504
96.63%
FILE 11134 - Fabled Rooks 9327
40.43%
1316
86.93%
FILE 11135 - Gopher that walks and swims 109
44.04%
45
68.89%
FILE 11136 - Hoax or what 18628
38.66%
4414
89.65%
FILE 11137 - Ingenuous Cubrency 12488
69.62%
5496
97.42%
FILE 11138 - Nuts and Bolts 3870
56.93%
1457
92.38%
FILE 11139 - Counting Quadrilaterals 145
50.34%
69
75.36%
FILE 11140 - Little Ali's Little Brother! 1284
31.93%
393
84.22%
FILE 11141 - Sugar Cubes 213
21.13%
62
58.06%
FILE 11142 - MineSweeper II 387
9.30%
100
30.00%
FILE 11143 - Subtitles 70
15.71%
26
38.46%
FILE 11144 - S.O.S. 575
18.09%
105
60.95%
FILE 11145 - AvreniM 128
14.84%
40
37.50%
FILE 11146 - Insurrection 401
24.69%
84
72.62%
FILE 11147 - KuPellaKeS BST 904
43.25%
308
88.96%
FILE 11148 - Moliu Fractions 1100
37.36%
407
84.52%
FILE 11149 - Power of Matrix 7677
25.24%
934
79.01%
FILE 11150 - Cola 43832
47.00%
14713
93.10%
FILE 11151 - Longest Palindrome 23811
30.81%
4735
83.25%
FILE 11152 - Colourful Flowers 20015
38.16%
5245
91.29%
FILE 11153 - Museums 870
26.55%
205
70.73%
FILE 11154 - An Octal World 208
10.58%
32
50.00%
FILE 11155 - Be Efficient 1593
45.57%
537
83.80%
FILE 11156 - Continuous Drawing 499
25.65%
121
68.60%
FILE 11157 - Dynamic Frog 6377
51.92%
2214
90.74%
FILE 11158 - Elegant Permuted Sum 1100
40.36%
459
81.05%
FILE 11159 - Factors and Multiples 6539
29.33%
1434
86.82%
FILE 11160 - Going Together 851
44.65%
247
81.78%
FILE 11161 - Help My Brother (II) 1600
55.00%
768
91.54%
FILE 11162 - Independent Attacking Zones 540
56.67%
194
90.21%
FILE 11163 - Jaguar King 1154
33.62%
196
75.51%
FILE 11164 - Kingdom Division 880
37.39%
309
84.47%
FILE 11165 - Galactic Travel 553
34.36%
159
76.10%
FILE 11166 - Power Signs 622
34.41%
213
76.06%
FILE 11167 - Monkeys in the Emei Mountain 4533
22.50%
748
71.39%
FILE 11168 - Airport 3925
35.77%
523
84.32%
FILE 11169 - Deal or No Deal 152
59.87%
61
81.97%
FILE 11170 - Cos(NA) 667
50.37%
304
90.79%
FILE 11171 - SMS 1084
16.97%
230
47.39%
FILE 11172 - Relational Operator 165946
56.59%
57650
95.78%
FILE 11173 - Grey Codes 5899
72.71%
2709
95.02%
FILE 11174 - Stand in a Line 2304
45.44%
483
86.96%
FILE 11175 - From D to E and Back 1761
52.64%
427
86.89%
FILE 11176 - Winning Streak 1713
53.94%
623
88.12%
FILE 11177 - Fighting Against a Polygonal Monster 1336
29.27%
194
70.10%
FILE 11178 - Morley's Theorem 3182
72.38%
786
96.18%
FILE 11179 - Bit Stream 689
29.75%
105
54.29%
FILE 11180 - Base i-1 589
70.80%
288
94.79%
FILE 11181 - Probability|Given 6224
57.02%
1563
96.10%
FILE 11182 - Zeroes III 766
25.98%
198
75.25%
FILE 11183 - Teen Girl Squad 5189
35.83%
705
69.65%
FILE 11184 - Joyful Ride 388
67.53%
208
88.94%
FILE 11185 - Ternary 31550
41.19%
10204
94.64%
FILE 11186 - Circum Triangle 1786
44.68%
381
84.25%
FILE 11187 - Water Crisis 589
24.62%
121
59.50%
FILE 11188 - A Strange Opera House 15
33.33%
10
50.00%
FILE 11189 - A Simple Pendulum 358
24.30%
90
65.56%
FILE 11190 - Series of Powers 521
31.86%
128
79.69%
FILE 11191 - Square 1189
30.19%
256
79.69%
FILE 11192 - Group Reverse 21681
55.69%
8916
95.73%
FILE 11193 - Infinix 205
26.83%
55
74.55%
FILE 11194 - Stone Grid 339
37.76%
57
68.42%
FILE 11195 - Another n-Queen Problem 9829
39.12%
2363
71.48%
FILE 11196 - Birthday Cake 755
27.42%
193
65.80%
FILE 11197 - Counting RNA sequences 164
33.54%
46
60.87%
FILE 11198 - Dancing Digits 1579
49.40%
547
89.21%
FILE 11199 - Equations in Disguise 390
16.15%
53
43.40%
<< Start < Prev 1 Next > End >>
Display # Results 1 - 100 of 100