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: 298 + 1699 + 1367 + 5001

Output: -7769


Input: Consider Input: 7147 + 1234 - 7159 + 8304 - 934 + 3025 - 796 - 5291 - 2549

Output: 11313


Input: Consider Input: 4224 - 9761 - 8262 + 6568 - 5026 + 916 - 5225 - 2454 - 1897


Output: 29365