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.

Ex Input:
7270 + 4138 - 1696 - 5719 - 9735 + 2360

Ex Output:
17922


Ex Input:
4331 - 362 - 8646 - 8722 + 6424 + 4083 - 579 + 4561

Ex Output:
7572


Ex Input:
6461 - 9826 + 5567 + 1254 - 9102 - 8964 + 4789 - 4004 - 9291

Ex Output:

36038