Problems

Chess on a Torus#3720

Very hard · Graphs · Breadth-first Search · Shortest paths

Nim Withoff#3721

Easy · Games

Fermat's Little Theorem#3723

Hard · Number theory

Cut a graph#3728

Very easy · Graphs

The Cost of a Walk#3730

Easy · Graphs · Graph network flows

Trust#3731

Hard · Binary Search · Graph network flows

Striking slipper#3732

Very easy · Math

Least Common Multiple#3733

Very easy · Number theory · Math

Zeros in the product#3734

Medium · Number theory · Math · Prime factorization

Golden sand#3736

Medium · Knapsack · Greedy algorithms

Is it a Heap?#3737

Very easy · Implementation

Simple Sorting#3738

Very easy · Sorting

Mutants-2#3739

Medium · Dynamic programming

Subarray with maximum XOR#3741

Very easy · Bitmasks

n^n mod 10^p#3742

Medium · Math

Factorial Again!#3744

Very easy · Implementation

Ants Colony#3745

Very easy · Graphs · Shortest paths

Bingo!#3746

Easy · Brute force

Cocircular Points#3747

Very easy · Geometry · Brute force

Digits Count#3748

Very easy · Math

Electric Needs#3749

Easy · Binary Search · Implementation

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