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: 8576 - 8960 - 1317 + 5701 + 5413 - 1195 + 135

Output: 8799


Input: Consider Input: 3097 + 17 - 8842 + 4949 + 8377 + 425 - 7128 + 6500

Output: -1201


Input: Consider Input: 5748 - 8780 - 3501 + 3131


Output: 14898