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: 7371 - 9025 + 8352 - 9201 - 9297 - 3561 + 8576

Output: 21527


Input: Consider Input: 5113 - 8987 - 452

Output: 14552


Input: Consider Input: 2246 + 3439 - 8030 + 7909


Output: -1072