import java.util.Scanner;
public class Main{
	public static int Int(char a){
		int i=0;
		if(a=='+') {
		i=1;
		}
		else {
			i=-1;
		}
		return i;
	}
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String a=scan.next();
		int ans=0;
		ans+=Int(a.charAt(0));
		ans+=Int(a.charAt(1));
		ans+=Int(a.charAt(2));
		ans+=Int(a.charAt(3));
		System.out.println(ans);
	}
}
/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