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: 1999 # 5055 @ 6736 # 8829 @ 7010 # 2968 # 259 @ 5904

Output: 4538


Input: Consider Input: 9924 @ 6266 # 7022 # 7976 # 2541 @ 5396

Output: 4047


Input: Consider Input: 6526 @ 8872 @ 4339 # 7570 @ 5180 @ 9178 @ 9878 @ 4328 @ 1952


Output: 42683


