import java.util.*;

public class Main {
	public static void main(String[] args) {
	    Scanner scanner = new Scanner(System.in);
	    String inputStr = scanner.nextLine();
		char[] array = inputStr.toCharArray();
		int result = 0;
		for (char input : array) {
			if (input == '+') {
			    result++;
			} else {
			    result--;
			}
		}
		System.out.print(result);
	}
}
/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