import java.util.Scanner;

public class Main {

	public static void main(String args[]) {
		Scanner t = new Scanner(System.in);
		int n = t.nextInt();
		int te = t.nextInt();
		int a = t.nextInt();
		double max = Math.abs((te - (t.nextInt()*0.006) - a));
		int pos = 1;
		for(int x=2;x<=n;x++){
			double h = (te - (t.nextInt()*0.006) - a);
			h = Math.abs(h);
			if (max >= h) {
				max = h;
				pos = x;
			}
		}		
		System.out.println(pos);
	}

}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz