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: 808 # 5395 # 5187 @ 8140 @ 2751 @ 1624 # 2083 @ 6224 # 8604

Output: -1722


Input: Consider Input: 1122 @ 3359 @ 4856 # 8802 @ 600 @ 3512 # 4067 @ 6320 @ 711

Output: 7611


Input: Consider Input: 457 @ 3261 @ 2130


Output: 5848