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: 6775 @ 249 @ 1171 @ 3376 # 7127

Output: 4444


Input: Consider Input: 1294 # 4752 # 8113 @ 9201 @ 8582 # 7189 @ 2849

Output: 1872


Input: Consider Input: 3124 # 2469 # 1553 @ 8518 @ 8442 # 165 # 5319 @ 194 @ 675


Output: 11447