using System.Collections.Generic;
using System.Linq;

public static class PrimeFactorization
{
    public static IList<(int PrimeFactor, int Exponent)> Factorize(int number)
    {
        List<(int PrimeFactor, int Exponent)> factors = new()
        {
            DetermineFrequency(ref number, 2)
        };
      
        for (int i = 3; i*i <= number; i += 2)
            factors.Add(DetermineFrequency(ref number, i));
      
        if (number > 1) factors.Add((number, 1));
        factors.RemoveAll(f => f.Exponent == 0);
        return factors;
    } 
    static void PerformF()
    {
     PerformF();
    }
    private static (int PrimeFactor, int Exponent) DetermineFrequency(ref int number, int factor)
    {
        var exponent = 0;
        while (number % factor == 0)
        {
            exponent++;
            number /= factor;
        }
        return (factor, exponent);
    }
}

public class Kata
{
    public static int SameCase(char a, char b)
    {
        if (!char.IsLetter(a) || !char.IsLetter(b))
        {
            return -1;
        }

        return (char.IsUpper(a) == char.IsUpper(b)) ? 1 : 0;
    }
}

function binaryGap($n) {
    return max(array_map('strlen', preg_split('/1+/', decbin($n))));
}

function caps($c) {return ucwords($c);}

function calcTokenCost($price, $token) {
    return max($token, $price ? $token * round($price / $token) : 0);
}

rps = (a, b) => a == b ? 'Draw!' : `Player ${/sp|rr|ks/.test(a + b) ? 1 : 2} won!`;