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Problems

Implementation
Difficulty
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2611
Replace digit
Very easy
2613
Maximum sum
Very easy
2614
GNCHE-1
2615
Archiving
Easy
2617
Birthdays
2618
The next number
Very easy
2625
High-Precision Number
Very easy
2628
A Minimum Land Price
Very easy
2636
Lambda-plant
2640
Train
Very easy
2644
Numbersrebmun
Very easy
2648
Burned Calendar
Very hard
2651
Very Simple Problem
Very easy
2666
Half
2667
Snake
2668
Spiral
Medium
2669
Rotation
2670
Coordinates of Neighbors
Very easy
2671
Minelayer
Easy
2677
Condorcet Winners
Very easy
2691
Passing grade
Very easy
2694
Determinant
Very easy
2701
Homework
Very easy
2702
The aliens
Easy
2713
The Fibonacci sequence
Easy
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