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: 5249 @ 1204 # 3908 # 5196 @ 1711 @ 8089 # 8419 # 2865 @ 1478

Output: -2657


Input: Consider Input: 6050 # 5266 # 3005

Output: -2221


Input: Consider Input: 3403 # 1318 # 7486 # 8240 # 8853 # 9772 @ 2268


Output: -29998