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

Ex Input:
126 @ 8943 @ 2476 # 7766 @ 2271 # 7213 @ 6602 # 8086 @ 2129

Ex Output:
-518


Ex Input:
1192 # 5752 # 5907 # 2119 # 9792 @ 917 @ 8428 # 6072 @ 592

Ex Output:
-18513


Ex Input:
9033 @ 1886 # 6615

Ex Output:

4304