import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;

public class Main {
    public static void main (String[] args) throws IOException {
        File file = new File(args[0]);
        BufferedReader buffer = new BufferedReader(new FileReader(file));
        String line;
        while ((line = buffer.readLine()) != null) {
            line = line.trim();

            String[] parts = line.split("\\s+");

            String numberN = parts[0];
            String pattern = parts[1];

            String part1;
            int number1, number2;

            if (pattern.contains("+")) {
                part1 = pattern.substring(0, pattern.indexOf("+"));

                number1 = Integer.parseInt(numberN.substring(0, part1.length()));
                number2 = Integer.parseInt(numberN.substring(part1.length()));

                System.out.println(number1 + number2);
            } else {
                part1 = pattern.substring(0, pattern.indexOf("-"));

                number1 = Integer.parseInt(numberN.substring(0, part1.length()));
                number2 = Integer.parseInt(numberN.substring(part1.length()));

                System.out.println(number1 - number2);
            }
        }
    }
}