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: 4224 - 9761 - 8262 + 6568 - 5026 + 916 - 5225 - 2454 - 1897

Output: 29365


Input: Consider Input: 5630 - 3377 + 9205 - 4071 + 9580 - 7049

Output: 1342


Input: Consider Input: 7178 - 2086 - 1606 + 4624 + 4559 - 4855


Output: 6542