Our Patreons
Diamond Sponsors
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Reinardus Pradhitya
Gold Sponsors
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Silver Sponsors
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Bronze Sponsors
Christianto Handojo
Krzysztof Adamek
Fatima Broom
Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
|
1500 - Alice and Bob | 653 |
45.48%
|
253 |
80.63%
|
|
|
|
1501 - Construct the Great Wall | 53 |
52.83%
|
33 |
72.73%
|
|
|
|
1502 - GRE Words | 1041 |
17.00%
|
114 |
59.65%
|
|
|
|
1503 - Ji-Tu Problem | 83 |
21.69%
|
30 |
50.00%
|
|
|
|
1504 - Genghis Khan the Conqueror | 800 |
28.00%
|
123 |
78.05%
|
|
|
|
1505 - Flood-it! | 1035 |
46.57%
|
325 |
86.46%
|
|
|
|
1506 - Running relay | 133 |
28.57%
|
28 |
78.57%
|
|
|
|
1507 - Shadow | 17 |
29.41%
|
15 |
33.33%
|
|
|
|
1508 - Equipment | 519 |
49.90%
|
179 |
87.71%
|
|
|
|
1509 - Leet | 447 |
46.98%
|
128 |
92.19%
|
|
|
|
1510 - Neon Sign | 620 |
69.03%
|
275 |
90.91%
|
|
|
|
1511 - Soju | 300 |
57.67%
|
85 |
85.88%
|
|
|
|
1512 - ASCII Expression | 73 |
28.77%
|
25 |
56.00%
|
|
|
|
1513 - Movie collection | 2813 |
44.08%
|
604 |
81.95%
|
|
|
|
1514 - Piece it together | 590 |
37.63%
|
126 |
79.37%
|
|
|
|
1515 - Pool construction | 1692 |
47.04%
|
296 |
94.59%
|
|
|
|
1516 - Smoking gun | 267 |
30.34%
|
55 |
80.00%
|
|
|
|
1517 - Tracking RFIDs | 184 |
36.96%
|
50 |
74.00%
|
|
|
|
1518 - Train delays | 284 |
35.92%
|
56 |
75.00%
|
|
|
|
1519 - Dictionary Size | 515 |
33.40%
|
119 |
75.63%
|
|
|
|
1520 - Flights | 156 |
39.74%
|
43 |
76.74%
|
|
|
|
1521 - GCD Guessing Game | 791 |
44.37%
|
249 |
85.94%
|
|
|
|
1522 - Lights (extreme) | 23 |
56.52%
|
14 |
64.29%
|
|
|
|
1523 - Helicopter | 269 |
53.90%
|
107 |
94.39%
|
|
|
|
1524 - Hot or Cold? | 465 |
39.14%
|
155 |
82.58%
|
|
|
|
1525 - Falling Leaves | 868 |
60.83%
|
201 |
93.03%
|
|
|
|
1526 - Edge Detection | 115 |
51.30%
|
52 |
71.15%
|
|
|
|
1527 - Instruens Fabulam | 54 |
55.56%
|
28 |
75.00%
|
|
|
|
1528 - Reserve Bookshelf | 58 |
24.14%
|
26 |
53.85%
|
|
|
|
1529 - Clock | 348 |
28.45%
|
119 |
60.50%
|
|
|
|
1530 - Floating Point Numbers | 285 |
30.53%
|
75 |
70.67%
|
|
|
|
1531 - Problem Bee | 255 |
22.75%
|
48 |
79.17%
|
|
|
|
1532 - A Well-Formed Problem | 101 |
6.93%
|
31 |
22.58%
|
|
|
|
1533 - Moving Pegs | 759 |
56.26%
|
194 |
88.66%
|
|
|
|
1534 - Taekwondo | 251 |
42.63%
|
70 |
85.71%
|
|
|
|
1535 - Lost Lists | 120 |
23.33%
|
40 |
52.50%
|
|
|
|
1536 - Coins | 248 |
14.92%
|
61 |
36.07%
|
|
|
|
1537 - Picnic Planning | 2241 |
22.53%
|
447 |
70.25%
|
|
|
|
1538 - Poly-polygonal Numbers | 106 |
24.53%
|
35 |
51.43%
|
|
|
|
1539 - Rational Approximation | 62 |
22.58%
|
29 |
41.38%
|
|
|
|
1540 - Checker's Check | 33 |
30.30%
|
20 |
45.00%
|
|
|
|
1541 - To Bet or Not To Bet | 131 |
54.96%
|
60 |
76.67%
|
|
|
|
1542 - BSP Trees | 44 |
40.91%
|
23 |
69.57%
|
|
|
|
1543 - Telescope | 610 |
65.41%
|
165 |
94.55%
|
|
|
|
1544 - Simple Arithmetics | 307 |
32.25%
|
56 |
62.50%
|
|
|
|
1545 - The Bulk | 41 |
63.41%
|
25 |
68.00%
|
|
|
|
1546 - Complete the sequence! | 151 |
53.64%
|
67 |
80.60%
|
|
|
|
1547 - Direct Visibility | 46 |
39.13%
|
21 |
61.90%
|
|
|
|
1548 - The Game of Master-Mind | 92 |
58.70%
|
43 |
81.40%
|
|
|
|
1549 - Lattice Point | 228 |
54.82%
|
119 |
84.03%
|
|
|
|
1550 - Coin Exchange | 45 |
26.67%
|
22 |
50.00%
|
|
|
|
1551 - Cog-Wheels | 99 |
22.22%
|
20 |
45.00%
|
|
|
|
1552 - Interactive Permutation Guessing | 206 |
0.00%
|
62 |
0.00%
|
|
|
|
1553 - Buffer Manager | 56 |
53.57%
|
26 |
69.23%
|
|
|
|
1554 - Binary Search | 177 |
50.28%
|
64 |
90.62%
|
|
|
|
1555 - Garland | 887 |
45.43%
|
246 |
94.72%
|
|
|
|
1556 - Disk Tree | 3160 |
29.72%
|
466 |
79.18%
|
|
|
|
1557 - Calendar Game | 173 |
61.85%
|
88 |
85.23%
|
|
|
|
1558 - Number Game | 314 |
29.94%
|
76 |
81.58%
|
|
|
|
1559 - Nim | 266 |
56.77%
|
137 |
82.48%
|
|
|
|
1560 - Extended Lights Out | 694 |
49.57%
|
231 |
87.45%
|
|
|
|
1561 - Cycle Game | 88 |
67.05%
|
42 |
83.33%
|
|
|
|
1562 - Balanced Chemical Equations | 57 |
24.56%
|
24 |
45.83%
|
|
|
|
1563 - SETI | 242 |
40.50%
|
91 |
76.92%
|
|
|
|
1564 - Widget Factory | 604 |
44.04%
|
159 |
91.19%
|
|
|
|
1565 - Stake Your Claim | 28 |
71.43%
|
19 |
63.16%
|
|
|
|
1566 - John | 955 |
73.30%
|
520 |
96.54%
|
|
|
|
1567 - A simple stone game | 200 |
52.50%
|
103 |
81.55%
|
|
|
|
1568 - Domino Puzzle | 49 |
36.73%
|
22 |
63.64%
|
|
|
|
1569 - Multiple | 454 |
25.55%
|
94 |
75.53%
|
|
|
|
1570 - Accelerator | 166 |
0.00%
|
28 |
0.00%
|
|
|
|
1571 - How I Mathematician Wonder What You Are! | 251 |
58.57%
|
110 |
90.00%
|
|
|
|
1572 - Self-Assembly | 4118 |
44.88%
|
709 |
85.90%
|
|
|
|
1573 - Hey, Better Bettor | 166 |
40.96%
|
65 |
56.92%
|
|
|
|
1574 - Surely You Congest | 396 |
31.31%
|
106 |
73.58%
|
|
|
|
1575 - Factors | 1466 |
38.81%
|
236 |
82.20%
|
|
|
|
1576 - Harvard | 139 |
39.57%
|
44 |
45.45%
|
|
|
|
1577 - Low Power | 1293 |
45.78%
|
298 |
80.20%
|
|
|
|
1578 - Map Tiles | 84 |
17.86%
|
26 |
46.15%
|
|
|
|
1579 - Matryoshka | 769 |
54.62%
|
254 |
83.46%
|
|
|
|
1580 - Pirate Chest | 500 |
50.20%
|
155 |
80.00%
|
|
|
|
1581 - Pollution Solution | 309 |
35.60%
|
101 |
71.29%
|
|
|
|
1582 - Up a Tree | 78 |
64.10%
|
36 |
58.33%
|
|
|
|
1583 - Digit Generator | 27110 |
49.09%
|
4627 |
93.91%
|
|
|
|
1584 - Circular Sequence | 18745 |
62.24%
|
3995 |
94.92%
|
|
|
|
1585 - Score | 57523 |
52.97%
|
13954 |
92.20%
|
|
|
|
1586 - Molar mass | 34143 |
52.75%
|
7574 |
92.94%
|
|
|
|
1587 - Box | 25271 |
29.18%
|
2780 |
83.31%
|
|
|
|
1588 - Kickdown | 18022 |
35.88%
|
2286 |
88.93%
|
|
|
|
1589 - Xiangqi | 19918 |
20.13%
|
1661 |
74.05%
|
|
|
|
1590 - IP Networks | 8329 |
35.43%
|
1139 |
87.88%
|
|
|
|
1591 - Data Mining | 2086 |
50.29%
|
416 |
93.51%
|
|
|
|
1592 - Database | 13435 |
37.61%
|
1523 |
88.25%
|
|
|
|
1593 - Alignment of Code | 12852 |
38.15%
|
1700 |
87.41%
|
|
|
|
1594 - Ducci Sequence | 11638 |
60.34%
|
2215 |
94.67%
|
|
|
|
1595 - Symmetry | 11500 |
45.19%
|
1703 |
90.55%
|
|
|
|
1596 - Bug Hunt | 3334 |
48.08%
|
591 |
89.34%
|
|
|
|
1597 - Searching the Web | 6016 |
26.40%
|
563 |
73.18%
|
|
|
|
1598 - Exchange | 2146 |
29.45%
|
291 |
79.38%
|
|
|
|
1599 - Ideal Path | 16434 |
21.62%
|
1244 |
71.46%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |
Browse Problems 

