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

class SumLines {
    
    public static void copy(String inFile, String outFile) throws FileNotFoundException, IOException {
	BufferedReader br = new BufferedReader(new FileReader(inFile));
	PrintWriter pw = new PrintWriter(new FileWriter(outFile));

	String line = br.readLine();
	while (line!=null){
	    int sum = 0;
	    StringTokenizer st = new StringTokenizer(line);
	    while (st.hasMoreTokens()){
		String token = st.nextToken();
		sum += Integer.parseInt(token);
	    }
	    pw.println(sum);
	    line = br.readLine();
	}
	br.close();
	pw.close();
    }

    public static void main(String[] args) throws FileNotFoundException, IOException {
	copy("inData","outData");
    }
}