Buggy python submission (verdict: Runtime Error):
def mizuyari2(l):
    count = 0
    stopper = 0

    for i in l:
        stopper+=i 
    if(stopper == 0):
        return 0        

    if(l[0]!=0):
        count+=1
    for i in range(len(l)-1):
        if(l[i]==0 and l[i+1]!=0):
            count+=1
    if(l[len(l)-2]==0 and l[len(l)-1!=0]):
        count+=1

    for index,i in enumerate(l):           
        l[index]-=1
        if(l[index]<0):
            l[index]=0

    return count+mizuyari2(l)

N = int(input())
h = []

for i in range(N):
    h.append(int(input()))

print(mizuyari2(h))

Fixed submission:
import array
def count_mizuyari(l):
    count = 0
    arr = array.array('i',[0])
    arr.extend(l)
    for i in range(len(arr)-1):
        if(arr[i]==0 and arr[i+1]!=0):
            count += 1
    return count
    

def mizuyari2(l):
    count = 0
    stopper = 0

    #要素が全部0かどうかの判定
    for i in l:
        stopper+=i 
    if(stopper == 0):
        return 0 
    else:     
        count=count_mizuyari(l)
    for index,i in enumerate(l):           
        l[index]-=1
        if(l[index]<0):
            l[index]=0

    return count+mizuyari2(l)

N = int(input())
h = array.array('i')

li = input().rstrip().split()
for i in li:
    h.append(int(i))


print(mizuyari2(h))

Buggy python submission (verdict: Runtime Error):
def mizuyari2(l):
    count = 0
    stopper = 0

    for i in l:
        stopper+=i 
    if(stopper == 0):
        return 0        

    if(l[0]!=0):
        count+=1
    for i in range(len(l)-1):
        if(l[i]==0 and l[i+1]!=0):
            count+=1

    for index,i in enumerate(l):           
        l[index]-=1
        if(l[index]<0):
            l[index]=0

    return count+mizuyari2(l)

N = int(input())
h = []

for i in range(N):
    h.append(int(input()))

print(mizuyari2(h))

Fixed submission:
import array
def count_mizuyari(l):
    count = 0
    arr = array.array('i',[0])
    arr.extend(l)
    for i in range(len(arr)-1):
        if(arr[i]==0 and arr[i+1]!=0):
            count += 1
    return count
    

def mizuyari2(l):
    count = 0
    stopper = 0

    #要素が全部0かどうかの判定
    for i in l:
        stopper+=i 
    if(stopper == 0):
        return 0 
    else:     
        count=count_mizuyari(l)
    for index,i in enumerate(l):           
        l[index]-=1
        if(l[index]<0):
            l[index]=0

    return count+mizuyari2(l)

N = int(input())
h = array.array('i')

li = input().rstrip().split()
for i in li:
    h.append(int(i))


print(mizuyari2(h))

Buggy python submission (verdict: Runtime Error):
def mizuyari2(l):
    count = 0
    stopper = 0

    for i in l:
        stopper+=i 
    if(stopper == 0):
        return 0        

    if(l[0]!=0):
        count+=1
    for i in range(len(l)-1):
        if(l[i]==0 and l[i+1]!=0):
            count+=1

    for index,i in enumerate(l):           
        l[index]-=1
        if(l[index]<0):
            l[index]=0

    return count+mizuyari2(l)

N = int(input())
h = []

for i in range(N):
    h.append(int(input()))

print(mizuyari2(h))

Fixed submission:
import array
def count_mizuyari(l):
    count = 0
    arr = array.array('i',[0])
    arr.extend(l)
    for i in range(len(arr)-1):
        if(arr[i]==0 and arr[i+1]!=0):
            count += 1
    return count
    

def mizuyari2(l):
    count = 0
    stopper = 0

    #要素が全部0かどうかの判定
    for i in l:
        stopper+=i 
    if(stopper == 0):
        return 0 
    else:     
        count=count_mizuyari(l)
    for index,i in enumerate(l):           
        l[index]-=1
        if(l[index]<0):
            l[index]=0

    return count+mizuyari2(l)

N = int(input())
h = array.array('i')

li = input().rstrip().split()
for i in li:
    h.append(int(i))


print(mizuyari2(h))