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(){
    long long A,B,SUM;
    char op;
    scanf("%lld %c %lld",&A,&op,&B);
    if(op == '+'){
        SUM = A + B;
    }else if(op == '-'){
        SUM = A - B;
    }else if(op == '*'){
        SUM = A * B;
    }else if(op == '/'){
        if(B == 0){
            printf("B not is zero");
            return 0;
        }
        SUM = A / B;
    }
    printf("%lld",SUM);
    return 0;
}