
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		String S = "";
		int Count = 0;

		Scanner scan = new Scanner(System.in);

		S = scan.next();
		
		for(int i=0;i< S.length();i++) {
			String str=S.substring(i, i+1);
			if(str.equals("+")) {
				Count++;
			}else if(str.equals("-")){
				Count--;
			}else {
				
			}
		}
		System.out.println(Count);
	}

}
/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