import java.util.*;
import java.io.*;
public class TrailerMethodFile {
  
  
  public static void main(String[] args) throws Exception{ 
    
    Scanner inFile = new Scanner(new File("trailer.txt"));
    
    int receipt= inFile.nextInt();
    int total = 0;
  
    while(receipt > 0) {
      total +=receipt;
      receipt = inFile.nextInt();
    }
    inFile.close();
    
    System.out.println("Your revenue is "+total);
  }
}