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.

Example Input: 555 + 1174 + 4465 + 6452 + 3211 + 2960 - 856 + 4997 - 9930
Example Output: -11918

Example Input: 2588 + 7474 + 7336 + 2767 - 1155 - 3435 - 6693
Example Output: -3706

Example Input: 6002 + 1947 - 7098 + 1397 - 748 - 7055 + 2872 - 7145 - 8206
Example Output:
30038