Buggy python submission (verdict: Runtime Error):
h,w=map(int,input().split())
ms=[]
for i in range(h):
    m=input()
    ms.append(list(m))
count=0
for i in range(h):
    for j in range(w):
        if ms[i][j]==".":
            if i>0 and j>0:
                if ms[i-1][j-1]=="#":
                    count+=1
            if i>0 :
               if ms[i-1][j]=="#":
                    count+=1
            if i>0 and w-1>j:
                if ms[i-1][j+1]=="#":
                    count+=1
            if j>0 :
                if ms[i][j-1]=="#":
                    count+=1
            if w-1>j :
                if ms[i][j+1]=="#":
                    count+=1
            if h-1>i and j>0 :
                if ms[i+1][j-1]=="#":
                    count+=1
            if h-1>i:
                if ms[i+1][j]=="#":
                    count+=1
            if h-1>i and h-1>j:
                if ms[i+1][j+1]=="#":
                    count+=1
            ms[i][j]=str(count)
            count=0

for i in range(h):
    temp="".join([ms[i][j] for j in range(w)])
    print(temp)



Fixed submission:
h,w=map(int,input().split())
ms=[]
for i in range(h):
    m=input()
    ms.append(list(m))
count=0
for i in range(h):
    for j in range(w):
        if ms[i][j]==".":
            if i>0 and j>0:
                if ms[i-1][j-1]=="#":
                    count+=1
            if i>0 :
               if ms[i-1][j]=="#":
                    count+=1
            if i>0 and w-1>j:
                if ms[i-1][j+1]=="#":
                    count+=1
            if j>0 :
                if ms[i][j-1]=="#":
                    count+=1
            if w-1>j :
                if ms[i][j+1]=="#":
                    count+=1
            if h-1>i and j>0 :
                if ms[i+1][j-1]=="#":
                    count+=1
            if h-1>i:
                if ms[i+1][j]=="#":
                    count+=1
            if h-1>i and w-1>j:
                if ms[i+1][j+1]=="#":
                    count+=1
            ms[i][j]=str(count)
            count=0

for i in range(h):
    temp="".join([ms[i][j] for j in range(w)])
    print(temp)

Buggy python submission (verdict: Runtime Error):
h,w=map(int,input().split())
ms=[]
for i in range(3):
    m=input()
    ms.append(list(m))
count=0
for i in range(h):
    for j in range(w):
        if ms[i][j]==".":
            if i>0 and j>0 :
                if ms[i-1][j-1]=="#":
                    count+=1
            if i>0 :
                if ms[i-1][j]=="#":
                    count+=1
            if i>0 and w>j+1 :
                if ms[i-1][j+1]=="#":
                    count+=1
            if j>0 :
                if ms[i][j-1]=="#":
                    count+=1
            if w>j+1 :
                if ms[i][j+1]=="#":
                    count+=1
            if h>i+1 and j>0 :
                if ms[i+1][j-1]=="#":
                    count+=1
            if h>i+1 :
                if ms[i+1][j]=="#":
                    count+=1
            if h>i+1 and h>j+1 :
                if ms[i+1][j+1]=="#":
                    count+=1
            ms[i][j]=str(count)
            count=0

for i in range(h):
    temp="".join(ms[i])
    print(temp)


Fixed submission:
h,w=map(int,input().split())
ms=[]
for i in range(h):
    m=input()
    ms.append(list(m))
count=0
for i in range(h):
    for j in range(w):
        if ms[i][j]==".":
            if i>0 and j>0:
                if ms[i-1][j-1]=="#":
                    count+=1
            if i>0 :
               if ms[i-1][j]=="#":
                    count+=1
            if i>0 and w-1>j:
                if ms[i-1][j+1]=="#":
                    count+=1
            if j>0 :
                if ms[i][j-1]=="#":
                    count+=1
            if w-1>j :
                if ms[i][j+1]=="#":
                    count+=1
            if h-1>i and j>0 :
                if ms[i+1][j-1]=="#":
                    count+=1
            if h-1>i:
                if ms[i+1][j]=="#":
                    count+=1
            if h-1>i and w-1>j:
                if ms[i+1][j+1]=="#":
                    count+=1
            ms[i][j]=str(count)
            count=0

for i in range(h):
    temp="".join([ms[i][j] for j in range(w)])
    print(temp)