MarkandToys.cs

// Mark and Toys
using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization;
using System.Text.RegularExpressions;
using System.Text;
using System;

class Solution {

    // Complete the maximumToys function below.
    static int maximumToys(int[] prices, int k) {
        Array.Sort(prices);
        var count = 0;

        foreach(var price in prices){
            k -= price;

            if(k >= 0)
                count++;
            else
                break;
        }

        return count;
    }

    static void Main(string[] args) {
        TextWriter textWriter = new StreamWriter(@System.Environment.GetEnvironmentVariable("OUTPUT_PATH"), true);

        string[] nk = Console.ReadLine().Split(' ');

        int n = Convert.ToInt32(nk[0]);

        int k = Convert.ToInt32(nk[1]);

        int[] prices = Array.ConvertAll(Console.ReadLine().Split(' '), pricesTemp => Convert.ToInt32(pricesTemp))
        ;
        int result = maximumToys(prices, k);

        textWriter.WriteLine(result);

        textWriter.Flush();
        textWriter.Close();
    }
}