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>
#include<string.h>
int main(void)
{
	int x, y, kotae;
	char mozi[10];
	scanf("%d%s%d", &x, &mozi, &y);
	if (strcmp(mozi, "+") == 0)
		kotae = x + y;
	else
		kotae = x - y;
	printf("%d", kotae);
   return 0;
}