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: 1592 + 7031 - 1902 + 5922 - 1351 + 8340 - 2032

Output: -14416


Input: Consider Input: 1344 + 7632 - 4322

Output: -1966


Input: Consider Input: 3323 + 4548 + 3369 + 7072 + 6679 + 2050


Output: -20395