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: 4195 + 6940 - 1053 - 4433 + 1540

Output: 1201


Input: Consider Input: 5125 - 607 + 8597 + 4804 + 5962 - 7812 - 176 - 9436 + 6198

Output: -2405


Input: Consider Input: 219 - 4657 + 8098 + 7805 + 3359 + 8405


Output: -22791