Buggy python submission (verdict: Runtime Error):
# D Patisserie
#入力を取得
N,M=map(int,input().split())
check=M+10 if M+10<=N else N
xyz_list,x_list,y_list,z_list=[],[],[],[]
for i in range(N):
    xyz_list.append(input().split())
    
var_list=[x for x in itl.product([-1,1],repeat=3)]
sum_list=[]
for i in var_list:
    print(i,xyz_list)
    sort_list=[0,]*N
    for j in range(N):
        sort_list[j]=int(xyz_list[j][0])*i[0]+ int(xyz_list[j][1])*i[1]+ int(xyz_list[j][2])*i[2]
    sort_list.sort(reverse=True)
    sum_=0
    print(sort_list)
    for j in range(M):
        sum_+=sort_list[j]
    sum_list.append(sum_)
    
sum_list.sort(reverse=True)
print(sum_list[0])

Fixed submission:
# D Patisserie
import itertools as itl
#入力を取得
N,M=map(int,input().split())
check=M+10 if M+10<=N else N
xyz_list,x_list,y_list,z_list=[],[],[],[]
for i in range(N):
    xyz_list.append(input().split())
    
var_list=[x for x in itl.product([-1,1],repeat=3)]
sum_list=[]
for i in var_list:
    sort_list=[0,]*N
    for j in range(N):
        sort_list[j]=int(xyz_list[j][0])*i[0]+ int(xyz_list[j][1])*i[1]+ int(xyz_list[j][2])*i[2]
    sort_list.sort(reverse=True)
    sum_=0
    for j in range(M):
        sum_+=sort_list[j]
    sum_list.append(sum_)
    
sum_list.sort(reverse=True)
print(sum_list[0])

Buggy python submission (verdict: Time Limit Exceeded):
# D Patisserie
N,M=map(int,input().split())
check=M+10 if M+10<=N else N
xyz_list,x_list,y_list,z_list=[],[],[],[]
for i in range(N):
    xyz_list.append(input().split())
for i in range(N):
    x_list.append([int(xyz_list[i][0]),i+1])
    y_list.append([int(xyz_list[i][1]),i+1])
    z_list.append([int(xyz_list[i][2]),i+1])
x_listn=x_list[:]
y_listn=y_list[:]
z_listn=z_list[:]
import itertools as itl
conb=[]
for i in range(check):
    conb.append(i)
conb=[x for x in itl.combinations(conb,M)]
sum_max=0

x_list.sort()
for l in range(2):
    for j in range(len(conb)):
        sum_x,sum_y,sum_z=0,0,0
        for k in conb[j]:
            num_comb=x_list[k][1]-1
            sum_x+=x_listn[num_comb][0]
            sum_y+=y_listn[num_comb][0]
            sum_z+=z_listn[num_comb][0]
        sum_xyz=abs(sum_x)+abs(sum_y)+abs(sum_z)
        if sum_xyz>sum_max:sum_max=sum_xyz
    x_list=x_list[::-1]
    
y_list.sort()
for l in range(2):
    for j in range(len(conb)):
        sum_x,sum_y,sum_z=0,0,0
        for k in conb[j]:
            num_comb=y_list[k][1]-1
            sum_x+=x_listn[num_comb][0]
            sum_y+=y_listn[num_comb][0]
            sum_z+=z_listn[num_comb][0]
        sum_xyz=abs(sum_x)+abs(sum_y)+abs(sum_z)
        if sum_xyz>sum_max:sum_max=sum_xyz
    y_list=y_list[::-1]
    
z_list.sort()
for l in range(2):
    for j in range(len(conb)):
        sum_x,sum_y,sum_z=0,0,0
        for k in conb[j]:
            num_comb=z_list[k][1]-1
            sum_x+=x_listn[num_comb][0]
            sum_y+=y_listn[num_comb][0]
            sum_z+=z_listn[num_comb][0]
        sum_xyz=abs(sum_x)+abs(sum_y)+abs(sum_z)
        if sum_xyz>sum_max:sum_max=sum_xyz
    z_list=z_list[::-1]
print(sum_max)

Fixed submission:
# D Patisserie
import itertools as itl
#入力を取得
N,M=map(int,input().split())
check=M+10 if M+10<=N else N
xyz_list,x_list,y_list,z_list=[],[],[],[]
for i in range(N):
    xyz_list.append(input().split())
    
var_list=[x for x in itl.product([-1,1],repeat=3)]
sum_list=[]
for i in var_list:
    sort_list=[0,]*N
    for j in range(N):
        sort_list[j]=int(xyz_list[j][0])*i[0]+ int(xyz_list[j][1])*i[1]+ int(xyz_list[j][2])*i[2]
    sort_list.sort(reverse=True)
    sum_=0
    for j in range(M):
        sum_+=sort_list[j]
    sum_list.append(sum_)
    
sum_list.sort(reverse=True)
print(sum_list[0])