import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        int score = 0;

        for (int i = 0; i < s.length(); i++) {
            switch (s.charAt(i)) {
                case '+':
                    score += 1;
                    break;
                case '-':
                    score -= 1;
                    break;
                default:
                    break;
            }
        }

        System.out.println(score);
    }
}

/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