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: 5891 @ 5687 @ 6434 # 9679 @ 2950 # 5934 @ 1364 @ 6773

Output: 13486


Input: Consider Input: 9817 @ 5042 # 1724 @ 799 @ 685

Output: 14619


Input: Consider Input: 9127 # 2892 @ 3963 @ 7449 # 81 @ 3175 # 962


Output: 19779