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: 1561 - 5861 - 6887 - 8406 - 5941 - 3633

Output: 32289


Input: Consider Input: 155 + 7497 + 4675 - 2329 - 9080 - 5510 - 2336 + 8701

Output: -1463


Input: Consider Input: 9153 - 2253 + 1145 - 7870 + 9847


Output: 8284