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: 5709 + 8211 + 3945 + 1143 - 7258

Output: -332


Input: Consider Input: 5527 - 35 - 9988 + 7417 - 5498

Output: 13631


Input: Consider Input: 9673 + 7136 - 4171 - 8296 + 655


Output: 14349