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: 3522 @ 8651 @ 5172 # 4816 # 7424 # 1074 # 1822 # 1419

Output: 790


Input: Consider Input: 2560 @ 144 @ 6785 @ 572 # 5190 @ 1929

Output: 6800


Input: Consider Input: 6538 # 3425 @ 2688 @ 7111 @ 2767 # 1164


Output: 14515