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: 5113 - 8987 - 452

Output: 14552


Input: Consider Input: 8053 - 8275 + 3672 - 7233 + 8748 - 1270 - 6997 - 7566 + 5689

Output: 21285


Input: Consider Input: 6132 - 4085 - 8523 + 3908 - 6272 + 4433 + 74


Output: 16597