Yuna gave 12 of the marbles she had to her younger sister and received 5 from her older sister. Then she gave half of the marbles she had to Namjoon and received 3 from Yoongi, making 17. How many marbles did Yuna have in the beginning?
17 3 [OP_SUB] 2 [OP_MUL] 5 [OP_SUB] 12 [OP_ADD]
var_a = 17
var_b = 3
var_c = var_a - var_b
var_d = 2
var_e = var_c * var_d
var_f = 5
var_g = var_e - var_f
var_h = 12
var_i = var_g + var_h
print(int(var_i))