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

Output: 3248


Input: Consider Input: 812 + 6106 - 2904 + 7738 + 7655 - 6987

Output: -10796


Input: Consider Input: 2300 + 6854 - 446 - 5417 + 1448


Output: -139