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: 3097 + 17 - 8842 + 4949 + 8377 + 425 - 7128 + 6500

Output: -1201


Input: Consider Input: 1311 + 7420 + 9121 + 7525 - 8582 + 528 + 1094

Output: -15795


Input: Consider Input: 925 + 8315 - 8967 - 1574 - 4114


Output: 7265