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: 5945 + 1046 + 9187 + 929

Output: -5217


Input: Consider Input: 1510 + 8779 + 5742 - 9951 - 2155

Output: -905


Input: Consider Input: 5409 + 3409 - 6343 + 5049 - 9462 + 6472 - 102 - 2990


Output: 9376