
import java.util.Scanner;

/**
 * Copyright © 2018 Chris. All rights reserved.
 *
 * @author Chris
 * 2018/6/23 11:55
 * @see meituan.n2018.Bturn
 */
public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);

        char ch[] = sc.next().toCharArray();
        int cnt = 0;
        for (char c : ch) {
            cnt += c == '+' ? 1 : -1;
        }
        System.out.println(cnt);
    }
}

/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