import java.util.Scanner;

public class Main {
	  public static void main(String[] args) {
	    Scanner sc = new Scanner(System.in);
	    String s = sc.next();
	    int num = 0;
	    for(int i = 0; i < s.length(); i++) {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    }
	    System.out.println(num);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	  public static void main(String[] args) {
	    Scanner sc = new Scanner(System.in);
	    String s = sc.next();
	    int num = 0;
	    for(int i = 0; i < s.length(); i++) {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    }
	    System.out.println(num);
	}
} Main public static void main(String[] args) {
	    Scanner sc = new Scanner(System.in);
	    String s = sc.next();
	    int num = 0;
	    for(int i = 0; i < s.length(); i++) {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    }
	    System.out.println(num);
	} main {
	    Scanner sc = new Scanner(System.in);
	    String s = sc.next();
	    int num = 0;
	    for(int i = 0; i < s.length(); i++) {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    }
	    System.out.println(num);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc int num = 0; num 0 for(int i = 0; i < s.length(); i++) {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    } int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    } {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    } if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	} "+".equals(s.substring(i, i+1)) "+".equals "+" s.substring(i, i+1) s.substring s i i+1 i 1 {
	    		num++;
	    	} num++ num {
	    		num--;
	    	} num-- num System.out.println(num) System.out.println System.out System System.out num String[] args args public class Main {
	  public static void main(String[] args) {
	    Scanner sc = new Scanner(System.in);
	    String s = sc.next();
	    int num = 0;
	    for(int i = 0; i < s.length(); i++) {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    }
	    System.out.println(num);
	}
} public class Main {
	  public static void main(String[] args) {
	    Scanner sc = new Scanner(System.in);
	    String s = sc.next();
	    int num = 0;
	    for(int i = 0; i < s.length(); i++) {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    }
	    System.out.println(num);
	}
} Main
import java.util.Scanner;

public class Main {
	  public static void main(String[] args) {
	    Scanner sc = new Scanner(System.in);
	    String s = sc.next();
	    int num = 0;
	    for(int i = 0; i < s.length(); i++) {
	    	if("+".equals(s.substring(i, i+1))) {
	    		num++;
	    	} else {
	    		num--;
	    	}
	    }
	    System.out.println(num);
	}
}
