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: 7165 + 3630 + 9021 - 4140 + 319

Output: -1665


Input: Consider Input: 9050 + 7188 + 3589 + 8762 + 268 + 1995 + 6080 - 4900

Output: -13932


Input: Consider Input: 1712 + 9753 - 9279 - 8362 - 3385 + 1609 - 4702 + 3254


Output: 12824