
import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner scan = new Scanner(System.in);
		int number = 0;
		String symbol;

		String S = scan.nextLine();

		for (int i = 0; i < 4; i++){
			symbol = S.substring(i, i + 1);
			if (symbol.equals("+")){
				number += 1;
			}else if (symbol.equals("-")) {
				number -= 1;
			}
		}
		System.out.println(number);
	}
}
/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