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:
2036 + 7313 - 8908 - 1870 - 5159 + 5945 + 5006 + 635 + 5551

Ex Output:
-6477


Ex Input:
6694 + 8723 - 1592 + 7366 + 9388

Ex Output:
-17191


Ex Input:
3393 - 1959 - 4338 - 8197 + 3993 - 7625 - 7892

Ex Output:

29411