import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    char[] S = sc.next().toCharArray();
    int ans = 0;
    for (int i = 0; i < 4; i++) ans += (S[i] == '+') ? 1 : -1;
    System.out.println(ans);
  }
} import java.util.*; util.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    char[] S = sc.next().toCharArray();
    int ans = 0;
    for (int i = 0; i < 4; i++) ans += (S[i] == '+') ? 1 : -1;
    System.out.println(ans);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    char[] S = sc.next().toCharArray();
    int ans = 0;
    for (int i = 0; i < 4; i++) ans += (S[i] == '+') ? 1 : -1;
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    char[] S = sc.next().toCharArray();
    int ans = 0;
    for (int i = 0; i < 4; i++) ans += (S[i] == '+') ? 1 : -1;
    System.out.println(ans);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] S = sc.next().toCharArray(); S sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc int ans = 0; ans 0 for (int i = 0; i < 4; i++) ans += (S[i] == '+') ? 1 : -1; int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i ans += (S[i] == '+') ? 1 : -1; ans += (S[i] == '+') ? 1 : -1 ans (S[i] == '+') ? 1 : -1 (S[i] == '+') S[i] S i '+' 1 -1 1 System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    char[] S = sc.next().toCharArray();
    int ans = 0;
    for (int i = 0; i < 4; i++) ans += (S[i] == '+') ? 1 : -1;
    System.out.println(ans);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    char[] S = sc.next().toCharArray();
    int ans = 0;
    for (int i = 0; i < 4; i++) ans += (S[i] == '+') ? 1 : -1;
    System.out.println(ans);
  }
} Main
import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    char[] S = sc.next().toCharArray();
    int ans = 0;
    for (int i = 0; i < 4; i++) ans += (S[i] == '+') ? 1 : -1;
    System.out.println(ans);
  }
}