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: 3394 - 2316 - 9713

Output: 15423


Input: Consider Input: 2510 - 5839 + 9950 + 740

Output: -2341


Input: Consider Input: 1773 - 7999 - 3637 - 1726 - 2829 - 7459 + 9615 + 4457 - 2759


Output: 14110