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>
#include <string.h>
int main(){

    int a,b;
    long long x;
    char c[10];
    scanf("%d",&a);
    scanf("%s",c);
    scanf("%d",&b);
    if(strcmp(c,"+")==0){
        x=a+b;
    }
    else{
        x=a-b;
    }
    printf("%lld\n",x);

    return 0;
}