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: 1953 - 3854 - 1362 + 6267 - 3664 - 901 + 7969 + 111

Output: -2613


Input: Consider Input: 7403 - 3327 + 5889 + 1034 + 1607 - 313

Output: 2513


Input: Consider Input: 9525 - 6588 + 2536 - 7663 + 3924 - 1602 + 3464 - 1422


Output: 16876