結果
| 問題 |
No.315 世界のなんとか3.5
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-04-16 00:24:01 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,386 bytes |
| コンパイル時間 | 160 ms |
| コンパイル使用メモリ | 82,060 KB |
| 実行使用メモリ | 177,280 KB |
| 最終ジャッジ日時 | 2025-04-16 00:25:09 |
| 合計ジャッジ時間 | 4,929 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 12 TLE * 1 -- * 23 |
ソースコード
MOD = 10**9 + 7
def subtract_one(s):
s_list = list(s)
i = len(s_list) - 1
while i >= 0 and s_list[i] == '0':
s_list[i] = '9'
i -= 1
if i == -1:
return '0'
s_list[i] = str(int(s_list[i]) - 1)
if s_list[0] == '0' and len(s_list) > 1:
return ''.join(s_list[1:])
return ''.join(s_list)
def count(s, P):
n = len(s)
dp = [{} for _ in range(n + 1)]
dp[0] = { (True, True, 0, False, 0): 1 }
for pos in range(n):
current_digit = int(s[pos])
for state in dp[pos]:
tight, leading_zero, sum_mod3, has_three, mod_p = state
count_val = dp[pos][state]
max_d = current_digit if tight else 9
for d in range(0, max_d + 1):
new_tight = tight and (d == max_d)
new_leading_zero = leading_zero and (d == 0)
new_sum_mod3 = sum_mod3
new_has_three = has_three
new_mod_p = mod_p
if not leading_zero:
new_sum_mod3 = (sum_mod3 + d) % 3
new_has_three = has_three or (d == 3)
new_mod_p = (mod_p * 10 + d) % P
else:
if d != 0:
new_leading_zero = False
new_sum_mod3 = d % 3
new_has_three = (d == 3)
new_mod_p = d % P
else:
new_sum_mod3 = 0
new_has_three = False
new_mod_p = 0
key = (new_tight, new_leading_zero, new_sum_mod3, new_has_three, new_mod_p)
if key not in dp[pos + 1]:
dp[pos + 1][key] = 0
dp[pos + 1][key] = (dp[pos + 1][key] + count_val) % MOD
total = 0
for state in dp[n]:
tight, leading_zero, sum_mod3, has_three, mod_p = state
if leading_zero:
continue
if (sum_mod3 == 0) or has_three:
if mod_p != 0:
total = (total + dp[n][state]) % MOD
return total
A, B, P = input().split()
P = int(P)
A_minus_1 = subtract_one(A)
len_B = len(B)
A_minus_1 = A_minus_1.zfill(len_B)
count_B = count(B, P)
count_A = count(A_minus_1, P)
ans = (count_B - count_A) % MOD
print(ans)
lam6er