list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
43 Copying Books   44 2706 25.60
19
19
110 Fill the Cisterns   28 1398 31.30
21
20
130 Rent your airplane and make money   88 3332 28.62
18
17
148 Land for Motorways   3 205 41.96
17
17
297 Aggressive cows   1053 39564 36.06
16
23
665 String it out   22 1215 38.75
13
16
1296 4 values whose sum is 0   63 5046 24.87
18
14
1431 Projections Of A Polygon   2 115 10.18
9
1
1713 Funny scales   12 560 30.50
17
16
1837 Pie   60 3772 30.41
18
15
2738 Number Guessing Game   42 4625 62.55
8
13
2905 Not a Triangle   92 4957 38.62
11
11
3273 Order statistic set   157 3083 25.75
22
20
3363 Svada   10 484 28.70
9
15
3749 Subset Sums   73 3987 26.28
17
20
3975 Most Servings Meal   8 349 26.33
28
28
3983 Right Triangle Counting   3 188 18.12
30
21
4061 Polygon   4 211 33.58
21
17
4200 Hamster flight   13 1148 45.40
5
13
4415 Power of Integer   1 268 21.82
17
26
4483 Roads Repair   7 177 32.49
20
23
4560 The Double HeLiX   145 8760 37.58
12
10
4580 ABCDEF   216 7764 29.19
14
16
5161 Factorial vs Power   14 1111 26.17
13
15
5296 Air Combat   -1 64 14.85
34
5652 Snow White and the N dwarfs   31 807 20.98
21
31
5970 Finding Primes   22 1324 27.84
16
15
5978 Frequent Prime Ranges   9 687 29.18
13
13
6168 Building Bridges   27 1637 26.01
11
17
6169 Standing Sequence   2 118 28.49
34
39
6956 IOI2009 Mecho   3 159 18.18
28
23
7386 Activities   61 1415 25.48
16
19
8002 Horrible Queries   394 10672 29.42
19
18
8129 Sky Lift   2 138 25.49
24
19
8406 Temple Queues   14 288 19.65
31
33
8952 Catapult that ball   35 2732 26.26
12
11
8985 Line up   19 386 50.84
16
17
9734 Hacking the random number generator   61 5718 38.83
8
6
10712 Easy Calculation   16 1354 35.68
10
14
10810 Its a Murder!   55 2349 22.05
16
17
11814 Eko   171 14458 26.56
13
14
12151 Pizzamania   28 2126 28.20
5
4
13780 Audition   17 639 23.93
17
17
14543 Range Sum   26 948 38.29
11
12
14742 Building Bridges(HARD)   10 443 23.83
14
17
14929 Subsequence   3 172 12.71
9
15
15376 Running Median   15 1113 26.09
11
9
15454 How to Handle the Fans   39 1505 50.26
12
11
16179 Platinum Relic!   1 68 22.69
6
6
16254 Running Median Again   41 1650 22.35
20
16

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