結果

問題 No.148 試験監督（3）
ユーザー maine_honzukimaine_honzuki
提出日時 2020-05-25 22:30:19
言語 Python3
(3.12.2 + numpy 1.26.4 + scipy 1.12.0)
結果
RE  
(最新)
AC  
(最初)
実行時間 -
コード長 49,877 bytes
コンパイル時間 143 ms
コンパイル使用メモリ 17,536 KB
実行使用メモリ 15,724 KB
最終ジャッジ日時 2024-04-21 03:55:13
合計ジャッジ時間 3,408 ms
ジャッジサーバーID
（参考情報） 		judge5 / 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 126 ms
15,488 KB
testcase_01 AC 214 ms
15,616 KB
testcase_02 AC 434 ms
15,464 KB
testcase_03 AC 423 ms
15,488 KB
testcase_04 AC 578 ms
15,616 KB
testcase_05 AC 442 ms
15,460 KB
testcase_06 RE -
testcase_07 RE -
testcase_08 RE -
testcase_09 RE -
testcase_10 RE -
testcase_11 AC 40 ms
15,460 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 # 

mod = 10**9+7
table= 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T = int(input())

def fact(n):
    N = n//(2 * 10**5)
    ret = table[N]
    for i in range(N*(2 * 10**5)+1,n+1):
        ret = ret * i % mod
    return ret

def inv(x):
    return pow(x,mod-2,mod)

for _ in range(T):
    C,P = map(int,input().split())
    if P >= mod or P*2-1 > C:
        print(0)
        continue
    a = C-P+1
    b = C-2*P+1
    a %= mod
    b %= mod
    if a<b:
        print(0)
    else:
        print(fact(a)*inv(fact(b))%mod)
0