Decrypt Message SoftUni

import java.util.Scanner;

public class DecryptingMessage {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int key = Integer.parseInt(scanner.nextLine());
        int n = Integer.parseInt(scanner.nextLine());
        String message = "";

        for (int i=1; i<=n; i++) {
            char ch = scanner.nextLine().charAt(0);
            message += (char) ((int) ch + key);
        }

        System.out.println(message);
    }
}