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 Julia (0.5.0) (judge verdict: Runtime Error)

parseInt(x) = parse(Int,x)

parseMap(x::Array{SubString{String},1}) = map(parseInt, x)

function main()
    A, op , B = readline() |> split
    A = parseInt(A)
    B = parseInt(B)

    if op=="+":
        println(A+B)
    else
        println(A-B)
    end
end

main()