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 Java7 (OpenJDK 1.7.0) (judge verdict: Runtime Error)

import java.io.*;
import java.util.*;
public class Main {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();
		//System.out.println(N);
		int []n=new int[N];
		for(int i=0;i<n.length;i++){
			n[i]=sc.nextInt();
			//System.out.println(n[i]);
		}
		int M=sc.nextInt();
		for(int i=0;i<M;i++){
			int sum=0;
			int m=sc.nextInt();
			//System.out.println(m);
			//System.out.println(n[m-1]);
			int s=sc.nextInt();
			//System.out.println(s);
			for(int j=0;j<N;j++){
				sum+=n[j];
			}
			sum+=s;
			sum-=n[m-1];
			System.out.println(sum);
		}
	}
}