import java.util.*;
public class Main{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int a = sc.nextInt();
int b = sc.nextInt();
int c = sc.nextInt();
int d = sc.nextInt();
int x = 0;
if(a == "+"){
x = x+1;}
else{
x = x-1;
}
if(b == "+"){
x = x+1;}
else{
x = x-1;
}
if(c == "+"){
x = x+1;}
else{
x = x-1;
}
if(d == "+"){
x = x+1;}
else{
x = x-1;
}
System.out.println(x);