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.

Input: Consider Input: 8576 - 8960 - 1317 + 5701 + 5413 - 1195 + 135

Output: 8799


Input: Consider Input: 1887 - 5213 + 516 - 4107 - 7681 - 125 - 1788 + 124 - 1460

Output: 21621


Input: Consider Input: 5489 + 3667 + 6883 - 2309 + 4461


Output: -7213