import java.util.*;
import static java.lang.Integer.*;
//import static java.lang.Long.*;
//import static java.lang.Math.*;
import static java.lang.System.*;

public class Main {
	public static void main(String[] args) {
		int i;
		Scanner sc = new Scanner(in);
		char[] s = sc.next().toCharArray();
		sc.close();
		int ans=0;
		for (i = 0; i < s.length; i++) {
			switch(s[i]) {
			case '+':
				ans++;
				break;
			case '-':
				ans--;
				break;
			}
			
		}
		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