#433596 (PyPy3) No.148 試験監督（3）

• 問題: No.148 試験監督（3）
• ユーザー: chocorusk
• 提出日時: 2020-02-22 22:39:39
• 言語: PyPy3 (7.3.15)
• 結果: RE (最新)
  AC
  (最初)
• 実行時間: -
• コード長: 38,171 bytes
• コンパイル時間: 529 ms
• コンパイル使用メモリ: 86,868 KB
• 実行使用メモリ: 77,164 KB
• 最終ジャッジ日時: 2024-04-18 06:34:44
• 合計ジャッジ時間: 1,955 ms
• ジャッジサーバーID （参考情報）: judge5 / judge1

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	58 ms; 67,924 KB
testcase_01	AC	59 ms; 68,224 KB
testcase_02	AC	74 ms; 68,352 KB
testcase_03	AC	72 ms; 67,712 KB
testcase_04	AC	85 ms; 68,200 KB
testcase_05	AC	70 ms; 67,328 KB
testcase_06	RE	-
testcase_07	RE	-
testcase_08	RE	-
testcase_09	RE	-
testcase_10	RE	-
testcase_11	AC	46 ms; 61,824 KB

ソースコード

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t=int(input())
mod=10**9+7
def fac(n):
    m=n&((1<<18)-1)
    q=n>>18
    ret=f[q]
    for i in range(m):
        ret=ret*(i+1+(q<<18))%mod
    return ret
for _ in range(t):
    c, p=map(int, input().split())
    if p>=mod or c<2*p-1:
        print(0)
    else:
        x=(c-2*p+2)%mod
        y=(c-p+1)%mod
        if x==0 or x>y:
            print(0)
        else:
            print(fac(y)*pow(fac(x-1), mod-2, mod)%mod)