    import java.util.*;
    public class Main {
     
    	public static void main(String[] args) {
    			
    		Scanner scan =new Scanner(System.in);
    		
    		char[]s =scan.next().toCharArray();
    		
    		int ans=0;
    		for (char i:s) {
    			if (i=='-') {
    				--ans;
    			}else {
    				++ans;
    			}
    		}
    		
    		System.out.print(ans);

    		
     
    }
    }
// end 
/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