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.

Example Input: 6042 + 4328 - 5171 + 23 + 4485 + 8072 + 4298
Example Output: -9993

Example Input: 826 - 6501 - 223 + 9761 - 8863
Example Output: 6652

Example Input: 9788 + 5205 - 92 - 3527 - 4698 - 3322 + 1761 - 322 - 4740
Example Output:
19523