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: 4151 + 4432 - 9403 + 9800 - 901 + 5508 + 3237
Example Output: -8522

Example Input: 2303 + 151 - 7031 + 7349 - 8676 + 9084 + 9773
Example Output: -8347

Example Input: 1829 - 2066 - 195 - 542 - 9421 + 1220 - 261 + 9087
Example Output:
4007