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.

Example Input: 2673 - 123 - 5121 + 7601 + 976 + 4369 - 4232
Example Output: -797

Example Input: 2342 + 4498 - 5816 + 2604 - 6155 - 2683 - 1893 - 2482
Example Output: 14269

Example Input: 972 + 668 + 718 + 3367 - 7702 + 4516 - 2526
Example Output:
1931