Buggy python submission (verdict: Time Limit Exceeded):
MOD = 10**9 + 7

s = input().strip()
ss = s[::-1]
rs = [10**i % 13 for i in range(6)]

n = len(s)
dp = [[0] * 13 for _ in range(n)]
for i, c in enumerate(ss):
    if i == 0:
        if c == '?':
            for j in range(10):
                dp[i][j] = 1
        else:
            dp[i][int(c)] = 1
    else:
        r = rs[i % 6]
        if c == '?':
            for j in range(13):
                for k in range(10):
                    l = (j + r * k) % 13
                    dp[i][l] += dp[i - 1][j]
                    dp[i][l] %= MOD
        else:
            for j in range(13):
                l = (j + r * int(c)) % 13
                dp[i][l] += dp[i - 1][j]
                dp[i][l] %= MOD
print(dp[n - 1][5] % MOD)

Fixed submission:
MOD = 10**9 + 7

s = input().strip()
ss = s[::-1]
rs = [10**i % 13 for i in range(6)]

n = len(s)
dp = [[0] * 13 for _ in range(n)]
for i, c in enumerate(ss):
    if i == 0:
        if c == '?':
            for j in range(10):
                dp[i][j] = 1
        else:
            dp[i][int(c)] = 1
    else:
        r = rs[i % 6]
        if c == '?':
            for j in range(13):
                for k in range(10):
                    dp[i][(j + r * k) % 13] += dp[i - 1][j]
        else:
            for j in range(13):
                dp[i][(j + r * int(c)) % 13] += dp[i - 1][j]
        for j in range(13):
            dp[i][j] %= MOD
print(dp[n - 1][5] % MOD)

Buggy python submission (verdict: Time Limit Exceeded):
MOD = 10**9 + 7

s = input().strip()
ss = s[::-1]
rs = [10**i % 13 for i in range(6)]

n = len(s)
dp = [[0] * 13 for _ in range(n)]
for i, c in enumerate(ss):
    if i == 0:
        if c == '?':
            for j in range(10):
                dp[i][j] = 1
        else:
            dp[i][int(c)] = 1
    else:
        r = rs[i % 6]
        if c == '?':
            for j in range(13):
                for k in range(10):
                    dp[i][(j + r * k) % 13] += dp[i - 1][j]
        else:
            for j in range(13):
                dp[i][(j + r * int(c)) % 13] += dp[i - 1][j]
        for j in range(13):
            dp[i][j] %= MOD
print(dp[n - 1][5] % MOD)

Fixed submission:
MOD = 10**9 + 7

s = input().strip()
ss = s[::-1]
rs = [10**i % 13 for i in range(6)]

n = len(s)
dp = [[0] * 13 for _ in range(n)]
for i, c in enumerate(ss):
    if i == 0:
        if c == '?':
            for j in range(10):
                dp[i][j] = 1
        else:
            dp[i][int(c)] = 1
    else:
        r = rs[i % 6]
        if c == '?':
            for j in range(13):
                for k in range(10):
                    dp[i][(j + r * k) % 13] += dp[i - 1][j]
        else:
            for j in range(13):
                dp[i][(j + r * int(c)) % 13] += dp[i - 1][j]
        for j in range(13):
            dp[i][j] %= MOD
print(dp[n - 1][5] % MOD)

Buggy python submission (verdict: Time Limit Exceeded):
MOD = 10**9 + 7

s = input().strip()
ss = s[::-1]
rs = [10**i % 13 for i in range(6)]

n = len(s)
dp = [[0] * 13 for _ in range(n)]
for i, c in enumerate(ss):
    if i == 0:
        if c == '?':
            for j in range(10):
                dp[i][j] = 1
        else:
            dp[i][int(c)] = 1
    else:
        r = rs[i % 6]
        if c == '?':
            for j in range(13):
                for k in range(10):
                    dp[i][(j + r * k) % 13] += dp[i - 1][j]
        else:
            for j in range(13):
                dp[i][(j + r * int(c)) % 13] += dp[i - 1][j]
print(dp[n - 1][5] % MOD)

Fixed submission:
MOD = 10**9 + 7

s = input().strip()
ss = s[::-1]
rs = [10**i % 13 for i in range(6)]

n = len(s)
dp = [[0] * 13 for _ in range(n)]
for i, c in enumerate(ss):
    if i == 0:
        if c == '?':
            for j in range(10):
                dp[i][j] = 1
        else:
            dp[i][int(c)] = 1
    else:
        r = rs[i % 6]
        if c == '?':
            for j in range(13):
                for k in range(10):
                    dp[i][(j + r * k) % 13] += dp[i - 1][j]
        else:
            for j in range(13):
                dp[i][(j + r * int(c)) % 13] += dp[i - 1][j]
        for j in range(13):
            dp[i][j] %= MOD
print(dp[n - 1][5] % MOD)

Buggy python submission (verdict: Time Limit Exceeded):
MOD = 10**9 + 7

s = input().strip()
ss = s[::-1]
rs = [10**i % 13 for i in range(6)]

n = len(s)
dp = [[0] * 13 for _ in range(n)]
for i, c in enumerate(ss):
    if i == 0:
        if c == '?':
            for j in range(10):
                dp[i][j] = 1
        else:
            dp[i][int(c)] = 1
    else:
        r = rs[i % 6]
        if c == '?':
            for j in range(13):
                for k in range(10):
                    dp[i][(j + r * k) % 13] += dp[i - 1][j]
        else:
            for j in range(13):
                dp[i][(j + r * int(c)) % 13] += dp[i - 1][j]
print(dp[n - 1][5] % MOD)

Fixed submission:
MOD = 10**9 + 7

s = input().strip()
ss = s[::-1]
rs = [10**i % 13 for i in range(6)]

n = len(s)
dp = [[0] * 13 for _ in range(n)]
for i, c in enumerate(ss):
    if i == 0:
        if c == '?':
            for j in range(10):
                dp[i][j] = 1
        else:
            dp[i][int(c)] = 1
    else:
        r = rs[i % 6]
        if c == '?':
            for j in range(13):
                for k in range(10):
                    dp[i][(j + r * k) % 13] += dp[i - 1][j]
        else:
            for j in range(13):
                dp[i][(j + r * int(c)) % 13] += dp[i - 1][j]
        for j in range(13):
            dp[i][j] %= MOD
print(dp[n - 1][5] % MOD)