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: 7671 - 2300 - 9650 - 6692 + 7656 + 4940 - 2878 - 5602 + 7222

Output: 14975


Input: Consider Input: 4272 + 6013 - 9409 - 6130 + 9575 + 2198

Output: 2025


Input: Consider Input: 1201 + 4452 - 8400 - 4638 - 6678 - 6255 - 7429 + 4951 - 2754


Output: 27952