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: 7053 - 797 + 1011 - 43 - 2798 - 1572 - 4498

Output: 15750


Input: Consider Input: 1278 + 4628 + 2357 + 3694 + 5775 + 8542 - 793

Output: -22925


Input: Consider Input: 1615 - 7455 - 862 - 3742 - 2135 + 6951 + 3323 + 4439 - 524


Output: 1620