Problem:
Score: 200 points

Problem Statement

A country decides to build a palace.

In this country, the average temperature of a point at an elevation of x meters is T-x \times 0.006 degrees Celsius.

There are N places proposed for the place. The elevation of Place i is H_i meters.

Among them, Princess Joisino orders you to select the place whose average temperature is the closest to A degrees Celsius, and build the palace there.

Print the index of the place where the palace should be built.

It is guaranteed that the solution is unique.

Constraints

1 \leq N \leq 1000

0 \leq T \leq 50

-60 \leq A \leq T

0 \leq H_i \leq 10^5

All values in input are integers.

The solution is unique.

Input

Input is given from Standard Input in the following format:

N
T A
H_1 H_2 ... H_N

Output

Print the index of the place where the palace should be built.

Sample Input 1

2
12 5
1000 2000

Sample Output 1

1

The average temperature of Place 1 is 12-1000 \times 0.006=6 degrees Celsius.

The average temperature of Place 2 is 12-2000 \times 0.006=0 degrees Celsius.

Thus, the palace should be built at Place 1.

Sample Input 2

3
21 -11
81234 94124 52141

Sample Output 2

3

Solution in C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)


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

namespace MyProgram
{
    public class Program
    {	
        public static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            double[] input = Console.ReadLine().Split(' ').Select(s => double.Parse(s)).ToArray();
            double T = input[0];
            double A = input[1];
            
            double[] palace = new double[n];
            input = Console.ReadLine().Split(' ').Select(s => double.Parse(s)).ToArray();
            
            double min = 99999999;
            double index = 0;
            
            for(int i = 0 ; i < n ; i++)
            {
                palace[i] = (T - input[i]) * 0.006;
                double sa = Math.Abs(A - palace[i]);
                if(sa < min)
                {
                    min = sa;
                    index = i+1;
                }
                
            }

            Console.WriteLine(index);
            
        }
    }
}