In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Input: Consider Input: 1185 - 6431 + 1326 - 2840 - 9276

Output: 18406


Input: Consider Input: 7961 - 5474 + 4234 - 4358 - 7627 - 2291 - 9771 + 9867 - 813

Output: 24194


Input: Consider Input: 8137 + 5006 - 7743 + 1478


Output: 9396