Jeonghee, Cheolsu, Eunsu, and Minjun went to the baseball field. If Eunsu and Minjun do not sit next to each other because they are not on good terms, find the number of cases in which four people sit in a row. (However, there are four seats and all are attached.)
[OP_LIST_SOL] Jeonghee Cheolsu Eunsu Minjun [OP_LIST_EOL] [OP_LIST_LEN] [OP_LIST_LEN] [OP_PERM] [OP_LIST_SOL] Eunsu [OP_LIST_EOL] [OP_SET_DIFFERENCE] [OP_LIST_LEN] [OP_LIST_LEN] [OP_PERM] [OP_LIST_SOL] Eunsu Minjun [OP_LIST_EOL] [OP_LIST_LEN] [OP_LIST_LEN] [OP_PERM] [OP_MUL] [OP_SUB]
var_a = 'Jeonghee'
var_b = 'Cheolsu'
var_c = 'Eunsu'
var_d = 'Minjun'
list_a= []
if "/" in str(var_d):
    var_d = eval(str(var_d))
list_a.append(var_d)
if "/" in str(var_c):
    var_c = eval(str(var_c))
list_a.append(var_c)
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_e = len(list_a)
var_f = len(list_a)
var_g = 1
var_e = int(var_e)
var_f = int(var_f)
for i, elem in enumerate(range(var_f)):
    var_g = var_g * (var_e-i)
var_h = 'Eunsu'
list_b= []
if "/" in str(var_h):
    var_h = eval(str(var_h))
list_b.append(var_h)
list_b.reverse()
list_c = list(set(list_a) - set(list_b))
var_i = len(list_c)
var_j = len(list_c)
var_k = 1
var_i = int(var_i)
var_j = int(var_j)
for i, elem in enumerate(range(var_j)):
    var_k = var_k * (var_i-i)
var_l = 'Eunsu'
var_m = 'Minjun'
list_d= []
if "/" in str(var_m):
    var_m = eval(str(var_m))
list_d.append(var_m)
if "/" in str(var_l):
    var_l = eval(str(var_l))
list_d.append(var_l)
list_d.reverse()
var_n = len(list_d)
var_o = len(list_d)
var_p = 1
var_n = int(var_n)
var_o = int(var_o)
for i, elem in enumerate(range(var_o)):
    var_p = var_p * (var_n-i)
var_q = var_k * var_p
var_r = var_g - var_q
print(int(var_r))