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:
8988 + 9565 + 4047 - 1723 + 7160 - 8838 + 5611 + 7126

Ex Output:
-13960

Ex Input:
775 - 7609 + 2326 + 8760 + 4505

Ex Output:
-7207

Ex Input:
7509 - 4281 + 6102 + 3335 + 3143 - 1693 + 2082 + 2797 - 3792

Ex Output:
-184