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 C (GCC 5.4.1) (judge verdict: Accepted)

#include<stdio.h>
int main(){	
	int a,b;	
	char s;	
	scanf("%d\n",&a);	
	scanf("%c",&s);	
	scanf("%d",&b);	
	if(s=='+')	  
	printf("%d\n",a+b);	
	else	  
	printf("%d\n",a-b);	
	return 0;
}