Buggy python submission (verdict: Time Limit Exceeded):
def f(i,k):
  for j in range(13):
    dp[i+1][(j*10+k)%13]+=dp[i][j]
    dp[i+1][(j*10+k)%13]%=mod
  
mod=10**9+7
s=input()
n=len(s)
dp=[[0]*13 for i in range(10**5+1)]
dp[0][0]=mul=1

for i in range(n):
  if s[i]=='?':
    for k in range(10):
      f(i,k)
  else:
    f(i,int(s[i]))
  
print(dp[n][5]%mod)


Fixed submission:
def f(i,k):
  for j in range(13):
    dp[i+1][(j*10+k)%13]+=dp[i][j]
    dp[i+1][(j*10+k)%13]%=mod
  
mod=10**9+7
s=input()
n=len(s)
dp=[[0]*13 for i in range(10**5+1)]
dp[0][0]=mul=1

for i in range(n):
  if s[i]=='?':
    for k in range(10):
      f(i,k)
  else:
    f(i,int(s[i]))
  
print(dp[n][5]%mod)

Buggy python submission (verdict: Runtime Error):
def f(i,k):
  for j in range(13):
    dp[i+1][(j*10+k)%13]+=dp[i][j]
    dp[i+1][(j*10+k)%13]%=mod
  
mod=10**9+7
s=input()
n=len(s)
dp=[[0]*13 for i in range(10**5)]
dp[0][0]=mul=1

for i in range(n):
  if s[i]=='?':
    for k in range(10):
      f(i,k)
  else:
    f(i,int(s[i]))
  
print(dp[n][5]%mod)


Fixed submission:
def f(i,k):
  for j in range(13):
    dp[i+1][(j*10+k)%13]+=dp[i][j]
    dp[i+1][(j*10+k)%13]%=mod
  
mod=10**9+7
s=input()
n=len(s)
dp=[[0]*13 for i in range(10**5+1)]
dp[0][0]=mul=1

for i in range(n):
  if s[i]=='?':
    for k in range(10):
      f(i,k)
  else:
    f(i,int(s[i]))
  
print(dp[n][5]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
def f(i,k):
  for j in range(13):
    dp[i+1][(k*mul+j)%13]+=dp[i][j]
    dp[i+1][(k*mul+j)%13]%=mod
  
mod=10**9+7
s=input()[::-1]
dp=[[0]*13 for i in range(10**5)]
dp[0][0]=mul=1

for i in range(len(s)):
  if s[i]=='?':
    for k in range(10):
      f(i,k)
  else:
    f(i,int(s[i]))
  mul*=10
  
print(dp[len(s)][5]%mod)


Fixed submission:
def f(i,k):
  for j in range(13):
    dp[i+1][(j*10+k)%13]+=dp[i][j]
    dp[i+1][(j*10+k)%13]%=mod
  
mod=10**9+7
s=input()
n=len(s)
dp=[[0]*13 for i in range(10**5+1)]
dp[0][0]=mul=1

for i in range(n):
  if s[i]=='?':
    for k in range(10):
      f(i,k)
  else:
    f(i,int(s[i]))
  
print(dp[n][5]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
def f(i,k):
  for j in range(13):
    dp[i+1][(k*mul+j)%13]+=dp[i][j]
    dp[i+1][(k*mul+j)%13]%=mod
  
mod=10**9+7
s=input()[::-1]
dp=[[0]*13 for i in range(10**5)]
dp[0][0]=mul=1

for i in range(len(s)):
  if s[i]=='?':
    for k in range(10):
      f(i,k)
  else:
    f(i,int(s[i]))
  mul*=10
  
print(dp[len(s)][5]%mod)


Fixed submission:
def f(i,k):
  for j in range(13):
    dp[i+1][(j*10+k)%13]+=dp[i][j]
    dp[i+1][(j*10+k)%13]%=mod
  
mod=10**9+7
s=input()
n=len(s)
dp=[[0]*13 for i in range(10**5+1)]
dp[0][0]=mul=1

for i in range(n):
  if s[i]=='?':
    for k in range(10):
      f(i,k)
  else:
    f(i,int(s[i]))
  
print(dp[n][5]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
import copy

def f(k,nextdp):
  for j in range(13):
    nextdp[(k*mul+j)%13]+=dp[j]
    nextdp[(k*mul+j)%13]%=mod
  return nextdp

mod=10**9+7
s=input()[::-1]
dp=[0]*13
dp[0]=mul=1

for i in range(len(s)):
  nextdp=[0]*13
  if s[i]=='?':
    for k in range(10):
      nextdp=f(k,nextdp)
  else:
    k=int(s[i])
    nextdp=f(k,nextdp)
  mul*=10
  dp=copy.copy(nextdp)
  
print(dp[5]%mod)


Fixed submission:
def f(i,k):
  for j in range(13):
    dp[i+1][(j*10+k)%13]+=dp[i][j]
    dp[i+1][(j*10+k)%13]%=mod
  
mod=10**9+7
s=input()
n=len(s)
dp=[[0]*13 for i in range(10**5+1)]
dp[0][0]=mul=1

for i in range(n):
  if s[i]=='?':
    for k in range(10):
      f(i,k)
  else:
    f(i,int(s[i]))
  
print(dp[n][5]%mod)