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: 4854 - 3903 - 3601 - 6666 - 170 - 3411 - 1306
Example Output: 23911

Example Input: 3719 - 4138 - 7321 - 9097 + 4558 + 9667 + 1909 + 647 - 6132
Example Output: 13626

Example Input: 4624 + 1072 + 9261 + 232 - 7837
Example Output:
1896