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Classical
Challenge
Partial
Tutorial
Riddle
Basics
#tags
ID
NAME
QUALITY
USERS
ACC %
DIFFICULTY
C
I
42
Adding Reversed Numbers
103
75196
6
4
25942
Ball sum
42
1763
11
11
30826
Bernoulli numbers
4
7
23
12
24998
PLAYING WITH BITS
34
772
13
13
36670
Bipartite Permutation
14
349
6
15
17921
XOR
-14
7565
1
1
18294
Problem1
1
73
1
6
26314
Corn Headache
7
352
8
9
34620
Crying Series
2
89
1
4
40400
Count Set Bits
326
1
1
27269
Cube Numbers
29
604
9
11
22403
Divisors of factorial
70
1903
14
14
36267
Fuad the wild scientist
11
27299
Find Log
1
123
1
1
25311
Candies
9
1072
6
7
32445
COUNT JUMPS
1
89
4
1
40512
Kevin likes array
1
42
1
1
25583
Easy Odd Sum
6
1642
4
4
35294
Tricky Means
220
17
1
31
Fast Multiplication
48
8575
15
12
16272
Nanoworld
1
38
17
17
25008
New Currency Shopping
1
11
34
17
36963
Nobabs Treasure Hunt
-1
71
1
1
35296
Prime or not Prime!
2
764
1
6
15708
Divisibility
13
7623
4
3
17104
Fun with Sequences (Act 3)
4
1985
1
1
17126
Fun with Sequences (Act 4)
4
1007
4
1
17481
Fun with Sequences (Act 5)
2
717
1
1
18011
Fun with Sequences (Act 6)
2
1006
1
1
18012
Fun with Sequences (Act 7)
869
1
1
176
Sum of one-sequence
5
664
11
27
22455
SUM OF PRODUCT
34
1035
18
20
35293
Sums to calculate
2
422
1
1
35297
Trial Division
1
110
17
1
235
Very Fast Multiplication
22
1242
26
22
#simple-math
The problem involves but simple mathematical concepts like arithmetic operations