©TCP-tryJAVA

import java.util.*;

public class prog {
	public static void main(String[] args) {
		int[] arr = new int[1000];
		for(int i = 0; i < arr.length; i++) {
			arr[i] = i;
		}
		
		System.out.println(Arrays.binarySearch(arr, 437));
	}
}