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: 496 + 5072 + 6259 + 1493 + 4824 + 2052 + 4751 - 8038

Output: -15917


Input: Consider Input: 5856 - 8885 - 8510 + 7879 + 2100

Output: 13272


Input: Consider Input: 7186 - 9171 + 3336 + 2616 - 4555


Output: 14960