import java.util.Scanner;

import javax.sql.rowset.serial.SerialArray;

public class Main {

		public static void main(String[] args){
			
			Scanner sc = new Scanner(System.in);
			// 整数の入力
			// スペース区切りの整数の入力
			String str = sc.next();
			String[] strArray = str.split("");

			int cnt = 0;
			for (int i = 0; i < strArray.length; i++) {
//				for (int j = i + 1; j < strArray.length; j++) {
				    // 1文字ずつ表示
			        if (strArray[i].toString().equals("+")){
					    cnt++;
			        }else{
			        	cnt--;
			        }
//				}
			}
		    System.out.println(cnt);
    	    return;
			

		}
}

/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