import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	int ans=0;
	for(int i=0;i<=s.length()-1;i++){
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	}
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