Buggy python submission (verdict: Runtime Error):
import sys
n=10000000
sys.setrecursionlimit(n)
def s(l):
    if l<2:
        return 1
    else:
        return s(l-2)
ab=int(input())
ll=s(ab)
a=0
b=1
while(b):
    if(ll%10!=0):
        b=0
    else:
        a=a+1
print(a)

Fixed submission:
def fun(n):
    if n%2!=0:
        return 0
    else:
        ans=0
        n//=2
        while(n):
            ans=ans+n//5
            n=n//5
    return ans


n = int(input())
if n>=2:
    print(fun(n))
else:
    print(0)

Buggy python submission (verdict: Runtime Error):
def findTrailingZeros(n): 
      
    # If n is odd 
    if (n & 1): 
        return 0
  
    # If n is even 
    else: 
        ans = 0
  
        # Find the trailing zeros 
        # in n/2 factorial 
        n //= 2
        while (n): 
            ans += n // 5
            n //= 5
  
        # Return the required answer 
        return ans 
  
# Driver code 
  
n=input();
  
print(findTrailingZeros(n)) 
  

Fixed submission:
def fun(n):
    if n%2!=0:
        return 0
    else:
        ans=0
        n//=2
        while(n):
            ans=ans+n//5
            n=n//5
    return ans


n = int(input())
if n>=2:
    print(fun(n))
else:
    print(0)

Buggy python submission (verdict: Runtime Error):
def findTrailingZeros(n): 
      
    # If n is odd 
    if (n & 1): 
        return 0
  
    # If n is even 
    else: 
        ans = 0
  
        # Find the trailing zeros 
        # in n/2 factorial 
        n //= 2
        while (n): 
            ans += n // 5
            n //= 5
  
        # Return the required answer 
        return ans 
  
# Driver code 
  
 input(n)
  
print(findTrailingZeros(n)) 
  

Fixed submission:
def fun(n):
    if n%2!=0:
        return 0
    else:
        ans=0
        n//=2
        while(n):
            ans=ans+n//5
            n=n//5
    return ans


n = int(input())
if n>=2:
    print(fun(n))
else:
    print(0)

Buggy python submission (verdict: Runtime Error):
n=int(input('enter number'))
def doublefactorial(n): 
    if (n == 0 or n == 1): 
        return 1; 
    return n * doublefactorial(n - 2);

def trailing_zeros(longint):
    manipulandum = str(longint)
    return len(manipulandum)-len(manipulandum.rstrip('0'))
  
print("Double factorial is",  
       doublefactorial(n));

print('trailing zeroes are'+ str(trailing_zeros(doublefactorial(n))))

Fixed submission:
def fun(n):
    if n%2!=0:
        return 0
    else:
        ans=0
        n//=2
        while(n):
            ans=ans+n//5
            n=n//5
    return ans


n = int(input())
if n>=2:
    print(fun(n))
else:
    print(0)

Buggy python submission (verdict: Runtime Error):
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(10 ** 7)
 
n = int(readline())
if n % 2 == 1:
    print(0)
else:
    n //= 2
    answ = 0
    while n:
        n //= 5
        answ += n
    print(answ)

Fixed submission:
def fun(n):
    if n%2!=0:
        return 0
    else:
        ans=0
        n//=2
        while(n):
            ans=ans+n//5
            n=n//5
    return ans


n = int(input())
if n>=2:
    print(fun(n))
else:
    print(0)