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: 3719 - 4138 - 7321 - 9097 + 4558 + 9667 + 1909 + 647 - 6132

Output: 13626


Input: Consider Input: 2596 + 8164 - 6385 + 6704

Output: -5887


Input: Consider Input: 8441 + 8309 - 6573 - 5432 - 9324 - 9268 - 3183 - 9760


Output: 43672