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: 6915 @ 3564 # 9197 # 9440 # 1112 @ 382 @ 9681 # 6512 # 9658

Output: -15377


Input: Consider Input: 1131 @ 2823 # 1847 @ 6137 @ 7300 @ 27

Output: 15571


Input: Consider Input: 5700 # 9822 # 8972 # 9061 # 7315 @ 5501 # 7272 # 1595


Output: -32836