import java.util.*;
import java.lang.*;
import java.io.*;

class Main {
    public static int findLargest(List<Integer> numbers) {
        int largest=numbers.get(0);
        for(int i=1; i<numbers.size(); i++){
                if(numbers.get(i)>=largest)
                    largest=numbers.get(i);
        }
        return largest;
    }

    public static void main(String[] args) {
        System.out.println(findLargest(Arrays.asList(12,5,78,23,91,34,16)));
        System.out.println(findLargest(Arrays.asList(-2,-9,-1,6)));
        System.out.println(findLargest(Arrays.asList(-6,-2,-9)));
    }
}