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++14 (GCC 5.4.1) (judge verdict: Accepted)

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