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: 2349 - 9730 - 8231 + 6983 + 9097 + 6965 - 2760

Output: 25


Input: Consider Input: 9292 - 7471 - 1025 - 8458 + 444

Output: 25802


Input: Consider Input: 7099 + 5156 + 5352


Output: -3409