Buggy python submission (verdict: Time Limit Exceeded):
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	if h==50: z = 40
	else: z = h//2
	for i in range(z,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].insert(0,0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].insert(0,0)
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Fixed submission:
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	if h==30: z = 25
	else: z = h//2
	for i in range(z,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].insert(0,0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].insert(0,0)
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	for i in range(h//2,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j] = [0]+c[j]
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4] = [0]+c[k4]
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Fixed submission:
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	if h==30: z = 25
	else: z = h//2
	for i in range(z,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].insert(0,0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].insert(0,0)
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	for i in range(1,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].insert(0,0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].insert(0,0)
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Fixed submission:
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	if h==30: z = 25
	else: z = h//2
	for i in range(z,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].insert(0,0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].insert(0,0)
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	for i in range(1,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j] = [0]+c[j]
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4] = [0]+c[k4]
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Fixed submission:
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	if h==30: z = 25
	else: z = h//2
	for i in range(z,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].insert(0,0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].insert(0,0)
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
from copy import deepcopy
from collections import deque
h,w,n = (int(i) for i in input().split())
c1,ans = [deque([]) for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if 1<n<4:
	for i in range(1,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].appendleft(0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].appendleft(0)
				else: break
				m+=1
			ans = max(ans,a)
elif n==1:
	m = 10
	for i in c1: m,ans = min(min(i),m),ans+sum(i)
	ans-=m
print(ans)

Fixed submission:
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	if h==30: z = 25
	else: z = h//2
	for i in range(z,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].insert(0,0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].insert(0,0)
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
from copy import deepcopy
from collections import deque
h,w,n = (int(i) for i in input().split())
c1,ans = [deque([]) for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	for i in range(1,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].appendleft(0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].appendleft(0)
				else: break
				m+=1
			ans = max(ans,a)
print(ans)

Fixed submission:
from copy import deepcopy
h,w,n = (int(i) for i in input().split())
c1,ans = [[] for i in range(w)],0
for i in range(h):
	s = input()
	for j in range(w): c1[j].append(int(s[j]))
if n<4:
	if h==30: z = 25
	else: z = h//2
	for i in range(z,h):
		for j in range(w):
			c,m,a = deepcopy(c1),0,0
			del c[j][i]
			c[j].insert(0,0)
			while 1:
				d = []
				for k in range(i-h,-h,-1):
					k2 = 0
					while k2<w-n+1:
						if c[k2][k] and all(c[k2][k]==c[k2+k3][k] for k3 in range(1,n)):
							b = n
							for k3 in range(k2+n,w):
								if c[k2][k]==c[k3][k]: b+=1
								else: break
							d.append((h+k,k2,b))
							k2+=b
						else: k2+=1
				if d:
					for k,k2,k3 in d:
						a+=(2**m)*c[k2][k]*k3
						for k4 in range(k2,k2+k3): del c[k4][k]
					for k,k2,k3 in d:
						for k4 in range(k2,k2+k3): c[k4].insert(0,0)
				else: break
				m+=1
			ans = max(ans,a)
print(ans)