import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int ans = 0;
		for (char s : sc.next().toCharArray()) {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		}
		System.out.println(ans);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int ans = 0;
		for (char s : sc.next().toCharArray()) {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		}
		System.out.println(ans);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int ans = 0;
		for (char s : sc.next().toCharArray()) {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		}
		System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
		int ans = 0;
		for (char s : sc.next().toCharArray()) {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		}
		System.out.println(ans);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int ans = 0; ans 0 for (char s : sc.next().toCharArray()) {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		} char s sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		} {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		} if (s == '+') {
				ans++;
			} else {
				ans--;
			} s == '+' s '+' {
				ans++;
			} ans++ ans {
				ans--;
			} ans-- ans 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);
		int ans = 0;
		for (char s : sc.next().toCharArray()) {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		}
		System.out.println(ans);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int ans = 0;
		for (char s : sc.next().toCharArray()) {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		}
		System.out.println(ans);
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int ans = 0;
		for (char s : sc.next().toCharArray()) {
			if (s == '+') {
				ans++;
			} else {
				ans--;
			}
		}
		System.out.println(ans);
	}
}