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: 1616 - 440 + 11

Output: 2045


Input: Consider Input: 8433 + 1618 + 9022 - 2431 - 8097 + 8068

Output: 253


Input: Consider Input: 7101 - 9535 - 419 - 4078 - 6838 - 3289 + 4693


Output: 26567