Yuna and 13 friends are standing in a line. Yuna is standing 4th from the left. How many more people are standing to Yuna's right than the people standing to her left?
13 4 [OP_SUB] 3 [OP_SUB]
var_a = 13
var_b = 4
var_c = var_a - var_b
var_d = 3
var_e = var_c - var_d
print(int(var_e))