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: 6694 + 8723 - 1592 + 7366 + 9388

Output: -17191


Input: Consider Input: 8571 - 5985 + 8912

Output: 5644


Input: Consider Input: 6473 - 6684 + 1870 + 850 - 531 - 2496 + 6092 - 2914 + 5076


Output: 5210