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Problems

5cl1ftokid1bn751ql21o0vdbs
Difficulty
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3916
Colored Balls
Easy
3931
Iguana
Hard
3950
Subsets
Easy
3952
All binary numbers of length n that contain k 1s
Very easy
3953
License plates
Very easy
4015
Tichu
Hard
4025
Digital Clock
Easy
4029
Hip To Be Square
Easy
4044
N Queens
Medium
4062
Herbarium
Medium
4067
Electronic Hunting
Very hard
4079
Permutation
Very easy
4086
Triangle
Very hard
4098
Prime Substring
Easy
4101
Three digit numbers
Medium
4106
Subsets generation
Very easy
4122
Periodic, My Dear Watson
Easy
4193
Fir Trees
Easy
4203
Box of chocolate
Medium
4204
The Millionaire's Will
Easy
4207
Bulls and cows
Hard
4210
Broken Scales
Easy
4225
Four Gate Push
Medium
4236
Cloudlet
Very hard
4242
Puzzle
Very easy
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