
import java.util.Scanner;

public class  Main{
    public static void main(String[] args){
        Scanner sr = new Scanner(System.in);
        String inputLine = sr.nextLine();
        int result = 0;
        if(inputLine.length() == 4){
            for (int i = 0; i < inputLine.length(); i++){
                String plusOrMinus =inputLine .substring(i,i+1);
                if(plusOrMinus.equals("+")){
                    result ++;
                }else{
                    result--;
                }
            }
        }
        System.out.println(result);
    }

}

/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