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: 2367 @ 4877 @ 8467 @ 5488 # 987 # 8899

Output: 11313


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

Output: -2657


Input: Consider Input: 6939 @ 1181 @ 3187 # 5428 @ 5253 @ 8306 @ 7235 @ 138 @ 2167


Output: 28978