import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String inputStr=sc.nextLine();
		char[] aStr=new char[inputStr.length()];
		int i = 0;
		for(int j = 0;j < inputStr.length();j++){
			aStr[j]=inputStr.charAt(j);
			if(aStr[j] == '+'){
				i = i + 1;
			}else{
				i = i - 1;
			}
		}
		// 出力
		System.out.println(i);
	}
}
/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