unilecs

using System;
					
public class Program
{
	public class TreeNode 
	{
		public int val;
		public TreeNode left;
		public TreeNode right;
		public TreeNode(int val, TreeNode left=null, TreeNode right=null) 

unilecs

using System;
					
public class Program
{
	public static int FindMaxDepth(string s) {
		int depth = 0;
		int curDepth = 0;
		for (int i = 0; i < s.Length; i++)
		{
			if (s[i] == '(') {

unilecs

using System;
using System.Linq;
					
public class Program
{
	public static long CountSubArrays(int[] nums, int k) {
		int len = nums.Length;
		int max = nums.Max();
		int start = 0;
		long res = 0; int maxCountInWindow = 0;

unilecs

using System;
using System.Linq;
using System.Collections.Generic;
					
public class Program
{
	public static int FindMinNumOfUniqueIntegers(int[] arr, int k) {
		var map = new Dictionary<int, int>();
		for (int i = 0; i < arr.Length; i++)
		{

unilecs

using System;
using System.Collections.Generic;
					
public class Program
{
	public static int FindMaxLengthBetweenEqualCharacters(string s) {
		int maxLen = -1;
		var map = new Dictionary<char, int>();
		for (int i = 0; i < s.Length; i++)
		{

unilecs

using System;
using System.Linq;
using System.Collections.Generic;
					
public class Program
{
	private static int Target;
	public static IList<IList<int>> Output;

	public static IList<IList<int>> CombinationSum(int[] candidates, int target) {

unilecs

using System;
using System.Collections.Generic;
					
public class Program
{
	public static string DestinationCity(IList<IList<string>> paths) {
		int len = paths.Count;
		// частный случай
		if (len == 1) {
		    return paths[0][1];

unilecs

using System;
					
public class Program
{
	public static int FindFreqNumber(int[] arr) 
	{
		int len = arr.Length;
		if (len < 3)
		{
		    return arr[0];

unilecs

using System;
					
public class Program
{
	public static string FindLarge3DigitNum(string num) 
	{
		string result = "";

		for (int i = 0; i < num.Length - 2; i++)
		{

unilecs

using System;
using System.Collections.Generic;
					
public class Program
{
	public static string ConvertNumToBinaryString(int num, int length)
	{
		string binary = Convert.ToString(num, 2);

		// добавляем ведущие нули до размера length