Temperatures

import java.util.*;
import java.io.*;
import java.math.*;

class Solution {

    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        int N = in.nextInt(); // the number of temperatures to analyse
        in.nextLine();
        String TEMPS = in.nextLine(); // the N temperatures expressed as 
                                      // integers ranging from -273 to 5526
        boolean onlyNegatives = true;
        
        if(N == 0)
            System.out.println("0");
        else
            if(N == 1)
                System.out.println(TEMPS);
        else
        {
            String[] number = TEMPS.split("\\s+");

            int min = -273;
            int [] num = new int[N];
            for(int i = 0; i < N; ++i){
                num[i] = Integer.parseInt(number[i]);
                if(num[i] > 0)
                    onlyNegatives = false;
            }
            for (int j = 0; j < N; ++j) {
                if (Math.abs(num[j]) < Math.abs(min)) {
                    min = num[j];
                }
            }
            
            if (onlyNegatives) {
                System.out.println(min);
            }
            else {
                System.out.println(Math.abs(min));
            }
        }
    }
}