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: 9625 - 1139 - 9303

Output: 20067


Input: Consider Input: 4195 + 6940 - 1053 - 4433 + 1540

Output: 1201


Input: Consider Input: 3394 - 2316 - 9713


Output: 15423