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: 7769 @ 9568 @ 388 # 5101 # 8590 # 9063 # 5298 @ 7728

Output: -2599


Input: Consider Input: 9487 # 9520 @ 4047

Output: 4014


Input: Consider Input: 7012 # 1456 @ 9442 @ 4967 # 7575 # 5527 # 4046


Output: 2817