Buggy python submission (verdict: Time Limit Exceeded):
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for i in range(len(s)-1, -1, -1):
    nextDP = [0]*13
    if s[i] == "?":
      for k in range(10):
        for j in range(13):
          t = (digit * k + j)%13
          nextDP[t] = (dp[j] + nextDP[t]) % mod
    else:
      si = int(s[i])
      for j in range(13):
        t = (digit * si + j)%13
        nextDP[t] = (dp[j] + nextDP[t]) % mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Fixed submission:
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for i in range(len(s)):
    nextDP = [0]*13
    if s[i] == "?":
      for k in range(10):
        for j in range(13):
          t = (k + j * 10)%13
          nextDP[t] = (dp[j] + nextDP[t]) % mod
    else:
      si = int(s[i])
      for j in range(13):
        t = (si + j * 10)%13
        nextDP[t] = (dp[j] + nextDP[t]) % mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for i in range(len(s)-1, -1, -1):
    nextDP = [0]*13
    if s[i] == "?":
      for k in range(10):
        for j in range(13):
          nextDP[(digit * k + j)%13] += dp[j]
          nextDP[(digit * k + j)%13] %= mod
    else:
      si = int(s[i])
      for j in range(13):
        nextDP[(digit * si + j)%13] += dp[j]
        nextDP[(digit * si + j)%13] %= mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Fixed submission:
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for i in range(len(s)):
    nextDP = [0]*13
    if s[i] == "?":
      for k in range(10):
        for j in range(13):
          t = (k + j * 10)%13
          nextDP[t] = (dp[j] + nextDP[t]) % mod
    else:
      si = int(s[i])
      for j in range(13):
        t = (si + j * 10)%13
        nextDP[t] = (dp[j] + nextDP[t]) % mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for i in range(len(s)-1, -1, -1):
    nextDP = [0]*13
    if s[i] == "?":
      for k in range(10):
        for j in range(13):
          nextDP[(digit * k + j)%13] += dp[j]
          nextDP[(digit * k + j)%13] %= mod
    else:
      si = int(s[i])
      for j in range(13):
        nextDP[(digit * si + j)%13] += dp[j]
        nextDP[(digit * si + j)%13] %= mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Fixed submission:
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for i in range(len(s)):
    nextDP = [0]*13
    if s[i] == "?":
      for k in range(10):
        for j in range(13):
          t = (k + j * 10)%13
          nextDP[t] = (dp[j] + nextDP[t]) % mod
    else:
      si = int(s[i])
      for j in range(13):
        t = (si + j * 10)%13
        nextDP[t] = (dp[j] + nextDP[t]) % mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for index, i in enumerate(s[::-1], start=1):
    nextDP = [0]*13
    if i == "?":
      for k in range(10):
        for j in range(13):
          nextDP[(digit * k + j)%13] += dp[j]
          nextDP[(digit * k + j)%13] %= mod
    else:
      for j in range(13):
        nextDP[(digit * int(i) + j)%13] += dp[j]
        nextDP[(digit * int(i) + j)%13] %= mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Fixed submission:
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for i in range(len(s)):
    nextDP = [0]*13
    if s[i] == "?":
      for k in range(10):
        for j in range(13):
          t = (k + j * 10)%13
          nextDP[t] = (dp[j] + nextDP[t]) % mod
    else:
      si = int(s[i])
      for j in range(13):
        t = (si + j * 10)%13
        nextDP[t] = (dp[j] + nextDP[t]) % mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for index, i in enumerate(s[::-1], start=1):
    nextDP = [0]*13
    if i == "?":
      for k in range(10):
        for j in range(13):
          nextDP[(digit * k + j)%13] += dp[j]
          nextDP[(digit * k + j)%13] %= mod
    else:
      for j in range(13):
        nextDP[(digit * int(i) + j)%13] += dp[j]
        nextDP[(digit * int(i) + j)%13] %= mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Fixed submission:
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for i in range(len(s)):
    nextDP = [0]*13
    if s[i] == "?":
      for k in range(10):
        for j in range(13):
          t = (k + j * 10)%13
          nextDP[t] = (dp[j] + nextDP[t]) % mod
    else:
      si = int(s[i])
      for j in range(13):
        t = (si + j * 10)%13
        nextDP[t] = (dp[j] + nextDP[t]) % mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
  s = input()
  mod = 10**9+7
  dp = [[0]*13 for _ in range(len(s) + 1)]
  dp[0][0] = 1
  digit = 1
  for index, i in enumerate(s[::-1], start=1):
    if i == "?":
      for k in range(10):
        for j in range(13):
          dp[index][(digit * k + j)%13] += dp[index - 1][j]
          dp[index][(digit * k + j)%13] %= mod
    else:
      for j in range(13):
        dp[index][(digit * int(i) + j)%13] += dp[index - 1][j]
        dp[index][(digit * int(i) + j)%13] %= mod
    digit *= 10
  print(dp[-1][5])

if __name__ == '__main__':
  main()

Fixed submission:
def main():
  s = input()
  mod = 10**9+7
  dp = [0]*13
  dp[0] = 1
  digit = 1
  for i in range(len(s)):
    nextDP = [0]*13
    if s[i] == "?":
      for k in range(10):
        for j in range(13):
          t = (k + j * 10)%13
          nextDP[t] = (dp[j] + nextDP[t]) % mod
    else:
      si = int(s[i])
      for j in range(13):
        t = (si + j * 10)%13
        nextDP[t] = (dp[j] + nextDP[t]) % mod
    dp = nextDP
    digit *= 10
  print(dp[5])

if __name__ == '__main__':
  main()