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: 8600 - 7082 + 49 + 8639 - 7036

Output: 14030


Input: Consider Input: 6108 + 2133 + 8600

Output: -4625


Input: Consider Input: 9786 + 7240 - 8099 + 100 + 4573 + 5982 + 9270 + 9911 - 8249


Output: -10942