結果

問題 No.148 試験監督(3)
ユーザー realDivineJKrealDivineJK
提出日時 2020-06-05 02:16:27
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 103 ms / 1,000 ms
コード長 21,468 bytes
コンパイル時間 466 ms
コンパイル使用メモリ 82,540 KB
実行使用メモリ 76,348 KB
最終ジャッジ日時 2024-05-08 02:48:47
合計ジャッジ時間 1,640 ms
ジャッジサーバーID
(参考情報)
judge4 / judge3
このコードへのチャレンジ
(要ログイン)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 61 ms
65,584 KB
testcase_01 AC 63 ms
66,016 KB
testcase_02 AC 83 ms
66,096 KB
testcase_03 AC 86 ms
66,084 KB
testcase_04 AC 86 ms
67,480 KB
testcase_05 AC 78 ms
67,300 KB
testcase_06 AC 94 ms
76,348 KB
testcase_07 AC 101 ms
76,340 KB
testcase_08 AC 103 ms
76,168 KB
testcase_09 AC 44 ms
62,148 KB
testcase_10 AC 43 ms
62,448 KB
testcase_11 AC 39 ms
58,536 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

fact = 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T = int(input())
mod = int(1e9) + 7
def inved(a):
    x, y, u, v, k, l = 1, 0, 0, 1, a, mod
    while l != 0:
        x, y, u, v = u, v, x - u * (k // l), y - v * (k // l)
        k, l = l, k % l
    return x % mod
peak = int(5e5)
def get_fact(n):
    pos = n // peak
    f = fact[pos]
    for j in range(n % peak):
        f *= (pos*peak+j+1)%mod
        f %= mod
    return f
    
for _ in range(T):
    C, P = input().split()
    m, n = len(P), len(C)
    if m >= 11 or n < m:
        print(0)
    else:
        P = int(P)
        if P >= mod:
            print(0)
        else:
            t = 0
            for i in range(n):
                t += int(C[i])
                if i < n - 1:
                    t *= 10
                    t %= mod
            if ((t - P + 1) % mod < P):
                print(0)
            elif n == m:
                if int(C) < int(P):
                    print(0)
                else:
                    t += mod - P + 1
                    t %= mod
                    X = get_fact(t)
                    Y = get_fact(t - P)
                    print(X*inved(Y)%mod)
            else:
                t += mod - P + 1
                t %= mod
                X = get_fact(t)
                Y = get_fact(t - P)
                print(X*inved(Y)%mod)
0