using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static int GetMinOperations(int[] nums, int x)

    {

        int len = nums.Length;

        int sum = nums.Sum() - x;

        if (sum < 0) return -1;

        if (sum == 0) return len;

        int start = 0, cur = 0, maxLen = -1;

        for(int end = 0; end < len; end++)

        {

            if (cur < sum)

                cur += nums[end];

            while (cur >= sum)

            {

                if (cur == sum)

                    maxLen = Math.Max(maxLen, end - start + 1);

                cur -= nums[start];

                start++;

            }

        }

​

        return maxLen == -1 ? -1 : len - maxLen;

    }

    public static void Main()

    {

        Console.WriteLine("UniLecs");

        // tests

        Console.WriteLine(GetMinOperations(new int[] { 1, 1, 4, 2, 3 }, 5)); // 2 

        Console.WriteLine(GetMinOperations(new int[] { 5, 6, 7, 8, 9 }, 4)); // -1

        Console.WriteLine(GetMinOperations(new int[] { 3, 2, 20, 1, 1, 3 }, 10)); // 5

    }

}