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 (Clang 3.8.0) (judge verdict: Accepted)

#include <stdio.h>

int
main(void)
{
	int A, B;
	char op;

	scanf("%d %c %d", &A, &op, &B);

	int res;
	if (op == '+')
		res = A + B;
	else
		res = A - B;

	printf("%d\n", res);
	return 0;
}