import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
// 读取输入字符串
String a = scanner.nextLine();
String b = new StringBuilder(a).reverse().toString();
// 将字符串转换为整数
int x = Integer.parseInt(a);
int y = Integer.parseInt(b);
// 输出结果
System.out.println(x + y);
scanner.close();
}
}

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