Problem:
Score : 100 points

Problem Statement

Joisino wants to evaluate the formula "A op B".
Here, A and B are integers, and the binary operator op is either + or -.
Your task is to evaluate the formula instead of her.

Constraints

1≦A,B≦10^9

op is either + or -.

Input

The input is given from Standard Input in the following format:

A op B

Output

Evaluate the formula and print the result.

Sample Input 1

1 + 2

Sample Output 1

3

Since 1 + 2 = 3, the output should be 3.

Sample Input 2

5 - 7

Sample Output 2

-2

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.io.*;
import java.util.*;

public class Main
{

	public static void main(String[] args)
	{
		 Scanner scan = new Scanner(System.in);
		 int first = scan.nextInt();
		 String op = scan.next();
		 int second = scan.nextInt();
		 if(op.equals("+")) {
			 System.out.println(first + second);
		 } else {
			 System.out.println(first - second);
		 }
	}

}