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: 6844 + 1340 - 4174 - 5664 + 4911 - 5241

Output: 15672


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

Output: -14416


Input: Consider Input: 7786 + 1071 - 8044 + 6904


Output: 7855