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:
5161 + 8791 + 9352 + 7272 + 935 + 8632 + 1201

Ex Output:
-31022


Ex Input:
2318 + 1498 - 953 + 3290 + 1371 + 6933 + 7553 + 7283 + 889

Ex Output:
-25546


Ex Input:
4748 + 6854 + 2968 + 4884 + 2529 + 4731 - 1025 - 8284 + 5278

Ex Output:

-13187