Equal Sum

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection.Metadata;
using System.Text;
using System.Threading.Tasks;

class EqualSums
{
    static int[] getInts()
    {
        string line = Console.ReadLine();

        string [] strings = line.Split(' ');
        int [] result = new int[strings.Length];

        for(int i = 0; i < result.Length; ++i)
        result[i] = int.Parse(strings[i]);

        return result;

    }

    static void Main()
    {

        int [] ints = getInts();

        if(ints.Length == 1)
        {
            System.Console.WriteLine(0);
            return;
        }

        if(ints.Length == 2)
        {
            if(ints[0] == 0 && ints[0] == ints[1])
            {
                System.Console.WriteLine(0);
                return;
            }

            if(ints[1] == 0 && ints[0] == ints[1])
            {
                System.Console.WriteLine(1);
                return;
            }

            System.Console.WriteLine("no");
            return;

        }

        bool isHave = false;
        int leftSum, rightSum;

        for(int i = 0; i < ints.Length; ++i)
        {
            leftSum = 0; rightSum = 0;
            for(int j = 0; j < i; j++)
                leftSum += ints[j];
            for(int j = i + 1; j < ints.Length; ++j)
                rightSum += ints[j];

            if(leftSum == rightSum)
            {
                System.Console.WriteLine(i);
                isHave = true;

            }
        }

        if(!isHave)
            System.Console.WriteLine("no");

    }
}

/*
1 2 3 3
1 2
1
1 2 3
10 5 5 99 3 4 2 5 1 1 4
*/