import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Scanner;

public class Main{
    public static void main(String[] args) {
        int i = 0;
        Scanner sc = new Scanner(System.in);
        String n = sc.next();
        char a = n.charAt(0);
        char b = n.charAt(1);
        char c = n.charAt(2);
        char d = n.charAt(3);
        if (a == '+') {
            i++;
        }else{
            i--;
        }
        if (b == '+') {
            i++;
        }else{
            i--;
        }
        if (c == '+') {
            i++;
        }else{
            i--;
        }
        if (d == '+') {
            i++;
        }else{
            i--;
        }
        System.out.println(i);
    }
}
/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