I want to choose 15 fruits from 4 types of fruits: apples, persimmons, pears, and tangerines. When I am trying to choose at least two from each type of fruit, how many ways can i choose?
4 15 [OP_ADD] 4 2 [OP_MUL] [OP_SUB] 1 [OP_SUB] 15 4 2 [OP_MUL] [OP_SUB] [OP_COMB]
var_a = 4
var_b = 15
var_c = var_a + var_b
var_d = 4
var_e = 2
var_f = var_d * var_e
var_g = var_c - var_f
var_h = 1
var_i = var_g - var_h
var_j = 15
var_k = 4
var_l = 2
var_m = var_k * var_l
var_n = var_j - var_m
var_o = 1
var_i = int(var_i)
var_n = int(var_n)
for i, elem in enumerate(range(var_n)):
    var_o = var_o * (var_i-i)
for i, elem in enumerate(range(var_n)):
    var_o = var_o / (i+1)
print(int(var_o))