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: 5175 - 1386 - 5328 - 898 + 5361 - 376 + 1286 + 861

Output: 5655


Input: Consider Input: 9909 - 1362 + 9804 + 5190 + 8223 - 3758

Output: -8188


Input: Consider Input: 7403 - 3327 + 5889 + 1034 + 1607 - 313


Output: 2513