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: 9910 + 9584 - 6394 - 5927

Output: 12647

Input: Consider Input: 758 + 1664 + 5481 - 1654 - 1804 + 5232 - 9130

Output: 969

Input: Consider Input: 4888 - 5550 + 1835 - 6124 - 3890 - 4103 - 5450 + 2015
Output: 26155