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

public class Main{

    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        //test cases
        String s = in.next();
        int n = s.length();
       
        int count=0;
        for(int i=0 ; i<n ; i++){
            if(s.charAt(i)=='+') count++;
            else count--;
        }
        System.out.println(count);
    }
}
/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