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: 1799 - 6428 + 9525 - 4524 + 9186

Output: -5960


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

Output: 24194


Input: Consider Input: 7302 - 4316 + 957 + 9689 - 4 - 4016 - 2475 - 6207


Output: 13674