import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		partA101();
	}


	public static void partA101() {
		Scanner scA = new Scanner(System.in);
		String S = scA.next();
		int count = 0;

		for(int i = 0 ; i < 4 ; i++) {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		}

		System.out.println(count);

	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		partA101();
	}


	public static void partA101() {
		Scanner scA = new Scanner(System.in);
		String S = scA.next();
		int count = 0;

		for(int i = 0 ; i < 4 ; i++) {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		}

		System.out.println(count);

	}
} Main public static void main(String[] args) {
		partA101();
	} main {
		partA101();
	} partA101() partA101 String[] args args public static void partA101() {
		Scanner scA = new Scanner(System.in);
		String S = scA.next();
		int count = 0;

		for(int i = 0 ; i < 4 ; i++) {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		}

		System.out.println(count);

	} partA101 {
		Scanner scA = new Scanner(System.in);
		String S = scA.next();
		int count = 0;

		for(int i = 0 ; i < 4 ; i++) {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		}

		System.out.println(count);

	} Scanner scA = new Scanner(System.in); scA new Scanner(System.in) String S = scA.next(); S scA.next() scA.next scA int count = 0; count 0 for(int i = 0 ; i < 4 ; i++) {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		} int i = 0 ; int i = 0 ; i 0 i < 4 i 4 i++ i++ i {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		} {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		} if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			} S.charAt(i) == '+' S.charAt(i) S.charAt S i '+' {
				count++;
			} count++ count if(S.charAt(i) == '-') {
				count--;
			} S.charAt(i) == '-' S.charAt(i) S.charAt S i '-' {
				count--;
			} count-- count System.out.println(count) System.out.println System.out System System.out count public class Main {

	public static void main(String[] args) {
		partA101();
	}


	public static void partA101() {
		Scanner scA = new Scanner(System.in);
		String S = scA.next();
		int count = 0;

		for(int i = 0 ; i < 4 ; i++) {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		}

		System.out.println(count);

	}
} public class Main {

	public static void main(String[] args) {
		partA101();
	}


	public static void partA101() {
		Scanner scA = new Scanner(System.in);
		String S = scA.next();
		int count = 0;

		for(int i = 0 ; i < 4 ; i++) {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		}

		System.out.println(count);

	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		partA101();
	}


	public static void partA101() {
		Scanner scA = new Scanner(System.in);
		String S = scA.next();
		int count = 0;

		for(int i = 0 ; i < 4 ; i++) {
			if(S.charAt(i) == '+') {
				count++;
			}else if(S.charAt(i) == '-') {
				count--;
			}
		}

		System.out.println(count);

	}
}