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.

Ex Input:
8455 + 5516 - 2131 + 6151 + 6314 + 9308 + 5493

Ex Output:
-22196


Ex Input:
5630 - 3377 + 9205 - 4071 + 9580 - 7049

Ex Output:
1342


Ex Input:
6178 - 1637 - 8197 - 6437 + 4591 - 6995 + 3562 + 9474

Ex Output:

11817