Students line up in five lines every time they jump rope, with an equal number of students in each line. Hoseok is always 4th from the left and 9th from the right in a row. How many students are there in all?
5 4 9 [OP_ADD] 1 [OP_SUB] [OP_MUL]
var_a = 5
var_b = 4
var_c = 9
var_d = var_b + var_c
var_e = 1
var_f = var_d - var_e
var_g = var_a * var_f
print(int(var_g))