When a 250-gram (g) barrel was filled with sand and weighed, it was 1 kilogram (kg) and 780 grams (g). When a box weighing 460 grams (g) was filled with sand and weighed again, it was 2 kilograms (kg) and 250 grams (g). Which sand is more heavier - the sand in the box or the barrel?
[OP_LIST_SOL] barrel box [OP_LIST_EOL] [OP_LIST_SOL] 1 1000 [OP_MUL] 780 [OP_ADD] 250 [OP_SUB] 2 1000 [OP_MUL] 250 [OP_ADD] 460 [OP_SUB] [OP_LIST_EOL] 1 [OP_LIST_MAX] [OP_LIST_INDEX] [OP_LIST_POP] [OP_LIST_GET]
var_a = 'barrel'
var_b = 'box'
list_a= []
if "/" in str(var_b):
    var_b = eval(str(var_b))
list_a.append(var_b)
if "/" in str(var_a):
    var_a = eval(str(var_a))
list_a.append(var_a)
list_a.reverse()
var_c = 1
var_d = 1000
var_e = var_c * var_d
var_f = 780
var_g = var_e + var_f
var_h = 250
var_i = var_g - var_h
var_j = 2
var_k = 1000
var_l = var_j * var_k
var_m = 250
var_n = var_l + var_m
var_o = 460
var_p = var_n - var_o
list_b= []
if "/" in str(var_p):
    var_p = eval(str(var_p))
list_b.append(var_p)
if "/" in str(var_i):
    var_i = eval(str(var_i))
list_b.append(var_i)
list_b.reverse()
var_q = 1
list_c=list_b.copy()
list_c.sort()
var_r = list_c[-var_q]
var_s = list_b.index(var_r)+1
var_t = list_a[var_s-1]
print(var_t)