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: 8769 - 3041 - 6567 + 1136 + 3380 + 4191 + 2049 + 7794 - 4291

Output: 4118


Input: Consider Input: 1163 - 3809 + 5176 - 2533 + 4885 - 8890 - 506 + 5874

Output: 966


Input: Consider Input: 4586 - 6436 + 6422 - 4088 + 5144 - 3442


Output: 6986