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Problems
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Difficulty
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3303
Brave Balloonists
Very easy
3323
Jealous Numbers
Easy
3464
Find the Multiples
Hard
3485
GCD Guessing Game
Easy
3553
Programming the EDSAC
Medium
3554
Decoding EDSAC Data
Medium
3563
Digit
Easy
3564
Dungeon Creation
Very hard
3608
Olympic Lottery
Easy
3620
!
Hard
3648
Sequence
Easy
3672
Divisors of 2
Easy
3675
Chain
Very hard
3684
Report 1
Very hard
3685
Report 3
Very hard
3688
Simple coincidence
Hard
3695
Sequence Reconstruction
Easy
3696
Planet
Hard
3705
Root
Very easy
3707
16 digits
Very easy
3709
Square root
Medium
3723
Fermat's Little Theorem
Hard
3733
Least Common Multiple
Very easy
3753
Ingenious Metro
Hard
3763
Very hard task
Very easy
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