list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3477 Baby   28 955 46.67
21
24
34229 "Operation - Modulo"   19 956 19.50
2
16
1442 Strange Food Chain   19 960 19.81
22
25
11933 DIAGONAL   6 962 24.58
12
12
12407 Johnny The Gambler   7 963 20.71
8
6
1693 Coconuts   14 967 29.88
19
29
5980 Matrix Game   14 968 29.10
8
20
408 Jill Rides Again   2 971 34.26
9
9
661 Nail Them   13 971 42.98
10
15
108 Decoding Morse Sequences   7 973 25.04
24
17
27234 Sums of 2 and 3   18 973 35.93
5
10
32944 Ada and Friends   13 974 38.98
10
7
687 Repeats   2 982 25.39
30
38
3877 Cvjetici   18 986 48.67
12
21
30669 Ada and Trip   35 994 31.07
14
11
1553 Backup Files   3 997 21.52
17
34
18149 Rama and Friends   10 999 28.64
14
12
25585 Hablu Wants to Buy   2 1000 55.67
6
7
7696 Encryption   3 1004 35.88
17
17
18095 Faridi and Yadav   3 1004 56.56
1
20
666 Con-Junctions   32 1006 40.93
14
19
1677 Halloween treats   10 1010 39.33
14
22
11409 Fibonacci With a Twist   11 1011 31.32
15
20
2699 Recursive Sequence (Version II)   16 1013 26.12
26
24
14543 Range Sum   26 1014 38.04
11
12
2426 Palindromes   10 1026 24.80
16
15
416 Divisibility by 15   5 1027 15.52
31
26
3979 Whirligig number   8 1030 38.07
10
15
25967 Social Network Community   31 1030 31.25
10
12
2150 Counting Subsequences   13 1031 29.42
9
13
5652 Snow White and the N dwarfs   32 1031 18.12
21
31
18941 True Friends   30 1034 51.33
12
13
17504 Run length encoding   12 1035 39.22
8
4
21615 Playing with GCD   21 1035 34.61
12
14
21347 Tulip And Numbers   15 1038 21.33
14
14
2526 Decoding   9 1041 36.51
23
15
4993 Traveling Salesman   8 1043 37.18
14
2
16480 Decrypt the message !   3 1046 36.98
8
4
18878 Topper Rama Rao   21 1049 48.43
11
21
32945 Ada and Subsequence   36 1050 46.74
7
8
13399 Rachu   8 1051 33.69
8
10
17725 Bad XOR   50 1052 23.85
16
22
15609 Spiky Mazes   22 1056 35.12
15
12
18965 Milk Scheduling   15 1056 25.56
10
15
7015 Party   -1 1058 51.01
3
15
9122 Diary   4 1066 35.71
12
3
11383 Fast Sum of two to an exponent   1 1067 30.24
6
3
151 The Courier   38 1069 35.62
22
23
3107 Odd Numbers of Divisors   27 1072 18.44
22
22
22455 SUM OF PRODUCT   35 1081 17.71
18
21

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