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: 2480 - 8716 + 5571 - 504 - 4905 - 392 - 5105 + 906

Output: 15625


Input: Consider Input: 6603 - 3783 + 3030 - 5787 + 8478 + 3046 - 1629

Output: 3248


Input: Consider Input: 757 + 3568 - 7142 + 563 + 6880 - 2266 - 8934 - 3677


Output: 11765