Keun-bae decided to jump rope 15 times on the first day, twice the first day on the second day, and twice the second day on the third day. If Keun-bae jumps rope in the same pattern, how many times will he have to do on the fourth day?
15 2 4 1 [OP_SUB] [OP_POW] [OP_MUL]
var_a = 15
var_b = 2
var_c = 4
var_d = 1
var_e = var_c - var_d
var_f = var_b ** var_e
var_g = var_a * var_f
print(int(var_g))