25 students stand in a line. When 9 students are standing behind Yuna, how many students are standing in front of Yuna?
25 9 [OP_SUB] 1 [OP_SUB]
var_a = 25
var_b = 9
var_c = var_a - var_b
var_d = 1
var_e = var_c - var_d
print(int(var_e))