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 Java7 (OpenJDK 1.7.0) (judge verdict: Accepted)

import java.util.Scanner;

public class Main {
    private static Scanner sc = new Scanner(System.in);
    static int N;
    static int T;
    static int A;
    static int []elevations;
    public static void main(String[] args) {
        N = sc.nextInt();
        T = sc.nextInt();
        A = sc.nextInt();
        //how to convert tokenized string to int array? 
        elevations = new int[N];
        for(int i = 0; i < N; ++i) {
            elevations[i] = sc.nextInt();
        }
        double minDiff = Math.abs(A - avgTemp(0));
        int minIndex = 0;
        for(int i = 0; i< N;++i) {
            double diff = Math.abs(A - avgTemp(i));
            if(diff < minDiff) {
                minDiff = diff;
                minIndex = i;
            }
          /*System.out.println(i+" "+diff);
          System.out.println("minDiff="+minDiff);
          System.out.println("minIndex="+minIndex);*/
        }
        System.out.println(minIndex + 1);
    }
    public static double avgTemp(int index) {
        double res = 0.0;
        res = T - (elevations[index] * 0.006);
      //System.out.println("avgTemp="+res);
        return res;
    }

}