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: Accepted)

using System;
using System.Collections.Generic;


public class Contest
{
	public static void Main()
	{
		int[] a = Array.ConvertAll(Console.ReadLine().Split(' '), new Converter<string,int>(s => int.Parse(s)));

		int[] b = Array.ConvertAll(Console.ReadLine().Split(' '), new Converter<string,int>(s => int.Parse(s)));
		int[] c = Array.ConvertAll(Console.ReadLine().Split(' '), new Converter<string,int>(s => int.Parse(s)));
//		int[] d = Array.ConvertAll(Console.ReadLine().Split(' '), new Converter<string,int>(s => int.Parse(s)));
/*
		int n = a[0];
		int[][] e = new int[n][];
		for(int i=0; i<n; i++) e[i] = Array.ConvertAll(Console.ReadLine().Split(' '), new Converter<string,int>(s => int.Parse(s)));
*/

		double ss = (double)(b[0]-b[1])/0.006;
		double m = Math.Abs(ss-c[0]);
		int idx = 0;
		for(int i=1; i<c.Length; i++) if(Math.Abs(ss-c[i]) < m) {
			m = Math.Abs(ss-c[i]);
			idx = i;
		}

		string ans = (idx+1).ToString();

		Console.WriteLine(ans);
	}
	
	private static int calc_main(int[] a,int[] b,int[] c,int[] d) {



		return 0;
	}




}