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: 6040 + 5815 + 9288 + 5107 + 5697 + 7993 - 672 + 8297

Output: -35485

Input: Consider Input: 4062 - 644 + 187 - 4501 + 1736 - 230

Output: 7514

Input: Consider Input: 9879 - 8585 + 4078 - 6210 + 7239 + 3002 - 2455 + 9817
Output: 2993