The classic programming language of Bitland is Bit++. This language is so peculiar and complicated.

The language is that peculiar as it has exactly one variable, called *x*. Also, there are two operations:
 -  Operation ++ increases the value of variable *x* by 1. -  Operation -- decreases the value of variable *x* by 1. 
A statement in language Bit++ is a sequence, consisting of exactly one operation and one variable *x*. The statement is written without spaces, that is, it can only contain characters "+", "-", "X". Executing a statement means applying the operation it contains.

A programme in Bit++ is a sequence of statements, each of them needs to be executed. Executing a programme means executing all the statements it contains.

You're given a programme in language Bit++. The initial value of *x* is 0. Execute the programme and find its final value (the value of the variable when this programme is executed).
The first line contains a single integer *n* (1 ≤ *n* ≤ 150) — the number of statements in the programme.

Next *n* lines contain a statement each. Each statement contains exactly one operation (++ or --) and exactly one variable *x* (denoted as letter «X»). Thus, there are no empty statements. The operation and the variable can be written in any order.
import java.util.Scanner; 
import java.util.Arrays;
import java.util.HashMap; 
public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner (System.in);
    int n = scan.nextInt();
    scan.nextLine();
    while (scan.hasNext()) {
        String ins = scan.nextLine();
        int temp = 0;
        if(ins.charAt(0) == '+') {
            ++temp;
        } else if(ins.charAt(0) == '-') {
            --temp;
        } else if(ins.charAt(2) == '+') {
            temp++;
        } else if(ins.charAt(2) == '-') {
            temp--;
        }
        n += temp;
    } 
    System.out.print(n);
  }
}