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: 1470 + 1395 + 3788 + 7517 + 2388 - 431 - 2393 + 4241 - 560

Output: -14475


Input: Consider Input: 3438 - 3865 - 956 - 3020 + 2696

Output: 8583


Input: Consider Input: 176 + 7345 - 5368 - 7362 + 3777 - 9336 + 8031


Output: 3089