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: 3677 + 3282 + 6324 + 6039 + 2578 - 7896 + 671 + 4192

Output: -11513


Input: Consider Input: 1930 - 7631 - 6614 + 5805 + 7376

Output: 2994


Input: Consider Input: 4585 - 5981 + 7788 - 2687 + 1943 - 9809 + 1146


Output: 12185