In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer

Input: Consider Input: 6420 @ 6956 @ 9478 # 4046

Output: 18808


Input: Consider Input: 5265 @ 8995 # 365 # 6720 @ 438 # 9846 # 1190 @ 1943 # 9835

Output: -11315


Input: Consider Input: 5046 @ 4949 # 9014 @ 3135 @ 8493


Output: 12609