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: 6820 - 387 + 8290 - 9203 - 9292 + 9249 - 3079

Output: 11242


Input: Consider Input: 5125 - 607 + 8597 + 4804 + 5962 - 7812 - 176 - 9436 + 6198

Output: -2405


Input: Consider Input: 2269 + 7840 - 467 - 5626


Output: 522