The beads are lined up in a row. There is a green marble at the 5th from the left and 3rd from the right. How many marbles are there in total?
5 3 [OP_ADD] 1 [OP_SUB]
var_a = 5
var_b = 3
var_c = var_a + var_b
var_d = 1
var_e = var_c - var_d
print(int(var_e))