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: 6245 + 6705 - 5181 + 7350 - 5051 - 8984 - 476 + 3773

Output: 8109


Input: Consider Input: 8849 + 869 + 880 + 8843 + 8122

Output: -9865


Input: Consider Input: 6308 - 2796 + 8987 + 622 - 7434 - 3495 + 3679 - 9626


Output: 16371