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: 1589 + 4479 - 6111 - 3158 - 7662

Output: 14041


Input: Consider Input: 5473 - 4337 - 6499 - 9119

Output: 25428


Input: Consider Input: 5360 + 7507 - 3329 + 6345 - 9328 + 3114


Output: 1051