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: 3129 - 7101 - 6763 + 9310 + 4977

Output: 2706


Input: Consider Input: 8988 + 9565 + 4047 - 1723 + 7160 - 8838 + 5611 + 7126

Output: -13960


Input: Consider Input: 5167 - 4094 + 6989 - 7086 - 9497 - 1040 + 4968 + 4394 + 32


Output: 10501