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: 8901 - 4785 + 1969 + 5985 + 517 + 5651 + 170
Example Output: -606

Example Input: 6562 - 9064 - 1127 + 8483 + 5128 + 3972 - 4330 + 908 - 7990
Example Output: 10582

Example Input: 1333 + 9928 - 7947 - 3283 - 4992 + 494 - 2982 - 7150
Example Output:
17265