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: 1887 - 5213 + 516 - 4107 - 7681 - 125 - 1788 + 124 - 1460

Output: 21621


Input: Consider Input: 7403 - 3327 + 5889 + 1034 + 1607 - 313

Output: 2513


Input: Consider Input: 8800 - 5941 + 7110 - 3285 - 2765 + 9943


Output: 3738