How many total cases can you pay with 4 500-won coins, 2 100-won coins, and 5 10-won coins (excluding the case where the payment amount is 0 won is)?
4 1 [OP_ADD] 2 1 [OP_ADD] [OP_MUL] 5 1 [OP_ADD] [OP_MUL] 1 [OP_SUB]
var_a = 4
var_b = 1
var_c = var_a + var_b
var_d = 2
var_e = 1
var_f = var_d + var_e
var_g = var_c * var_f
var_h = 5
var_i = 1
var_j = var_h + var_i
var_k = var_g * var_j
var_l = 1
var_m = var_k - var_l
print(int(var_m))