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: 9491 + 8647 - 4571 + 8815 - 4816 - 8552 + 1794

Output: 8174


Input: Consider Input: 7429 - 1580 + 4871 - 4827 + 5567 + 8524 - 7275 + 2316


Output: -167