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: 1463 @ 3742 @ 6816 @ 2090 @ 7068 @ 283 # 5740 @ 4067

Output: 19789


Input: Consider Input: 9938 # 267 # 6696 # 8186 # 5729 # 8517 # 6331 @ 7607

Output: -18181


Input: Consider Input: 2003 @ 8181 @ 4833 # 5851 # 5866 # 5206 # 7378


Output: -9284