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: 5513 @ 1221 @ 8910 @ 8422

Output: 24066


Input: Consider Input: 3351 @ 1445 @ 5875 # 1267 # 4225 @ 4098 @ 3552

Output: 12829


Input: Consider Input: 1463 # 3208 @ 8384 @ 6662 @ 7753 # 1429 @ 1956 @ 4980 # 7138


Output: 19423