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: 1780 - 963 - 3786 - 8938 + 5127 + 4125 + 8911 + 9677

Output: -12373


Input: Consider Input: 2514 - 3539 - 8491 + 7351 - 1448

Output: 8641


Input: Consider Input: 944 - 2916 + 2300


Output: 1560