import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner reader = new Scanner(System.in);
        reader.useDelimiter("");
        int res = 0;
        for (int i = 0; i < 4; ++i) {
            switch (reader.next()) {
                case "+": {
                    res++;
                    break;
                }
                case "-": {
                    res--;
                    break;
                }
            }
        }
        System.out.println(res);
        reader.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