public class Main {
    public static void main(String[] args)
    {
        int T_num = 0;
        String S = new java.util.Scanner(System.in).nextLine();
        for(int i=0; i<4; i++)
        {
            char testr = S.charAt(i);
            if(testr == '+')
            {
                T_num++;
            }
            else if(testr == '-')
            {
                T_num--;
            }

        }
        System.out.println(T_num);
    }
}

/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