import java.util.Scanner;
public class Main{
	public static void main(String[] args){
		Scanner as = new Scanner(System.in);
		String n = as.next();

		String[] strArray = n.split("");

		int pcount = 0;



		for(int i=0;i<strArray.length;i++) {

			if(strArray[i].equals("+")){
				pcount += 1;
			}else if(strArray[i].equals("-")) {
				pcount -= 1;
			}
		}

		System.out.println(pcount);
	}
}
/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