import java.util.Scanner;
public class Main {
public static void main
(String[] args
) { Scanner scanner
= new Scanner
(System.
in); int N = scanner.nextInt();
long Max
= Long.
MIN_VALUE; for (int i = 0; i < N; i++) {
long X = scanner.nextLong();
if (X > Max) {
Max = X;
}
}
scanner.close();
}
}
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