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: 7208 + 2074 + 2796 - 8783
Example Output: 11121

Example Input: 8552 - 1559 - 9197 - 2232
Example Output: 21540

Example Input: 5878 + 5830 - 9715 + 2974 - 544
Example Output:
7333