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: 5986 + 9293 + 3288 - 1791 + 6613 + 8185 - 7053

Output: -12549


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

Output: -9865


Input: Consider Input: 7424 + 9500 - 3067


Output: 991