import java.util.Scanner;

public class Main {
	  
	public static void main(String args[]) {
		    Scanner scanner = new Scanner(System.in);
		    
		   int count = 0;
		   String  s = scanner.nextLine();
		   
		   for(int i = 0; i < s.length();) 
		   {
			   if(s.substring(i, i + 1 ).equals("+"))
			   {
				   count = count + 1;
			   }
			   else 
			   {
				   count = count - 1;
			   }
				i = i + 1;   
				   
		   }
		    
		   System.out.println(count);
		   
		    scanner.close(); }
		  }
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz