結果

問題 No.797 Noelちゃんとピラミッド
ユーザー qqr_i
提出日時 2019-03-15 22:31:34
言語 Python3
(3.7.1 + numpy 1.14.5 + scipy 1.1.0)
結果
WA   .
実行時間 -
コード長 279 Byte
コンパイル時間 57 ms
使用メモリ 16,800 KB
最終ジャッジ日時 2019-03-15 22:31:44

テストケース

テストケース表示
入力 結果 実行時間
使用メモリ
LEARGE_case1.txt WA -
LEARGE_case2.txt WA -
LEARGE_case3.txt WA -
LEARGE_case4.txt WA -
LEARGE_case5.txt WA -
LEARGE_case6.txt WA -
LEARGE_case7.txt WA -
LEARGE_case8.txt WA -
LEARGE_case9.txt WA -
LEARGE_case10.txt WA -
LEARGE_case11.txt WA -
LEARGE_case12.txt WA -
LEARGE_case13.txt WA -
LEARGE_case14.txt WA -
LEARGE_case15.txt WA -
LEARGE_case16.txt WA -
LEARGE_case17.txt WA -
LEARGE_case18.txt WA -
LEARGE_case19.txt WA -
LEARGE_case20.txt WA -
RANDOM_case1.txt WA -
RANDOM_case2.txt WA -
RANDOM_case3.txt WA -
RANDOM_case4.txt WA -
RANDOM_case5.txt WA -
RANDOM_case6.txt WA -
RANDOM_case7.txt WA -
RANDOM_case8.txt WA -
RANDOM_case9.txt WA -
RANDOM_case10.txt WA -
RANDOM_case11.txt WA -
RANDOM_case12.txt WA -
RANDOM_case13.txt WA -
RANDOM_case14.txt WA -
RANDOM_case15.txt WA -
RANDOM_case16.txt WA -
RANDOM_case17.txt WA -
RANDOM_case18.txt WA -
RANDOM_case19.txt WA -
RANDOM_case20.txt WA -
SMALL_case1.txt WA -
SMALL_case2.txt WA -
SMALL_case3.txt WA -
SMALL_case4.txt WA -
SMALL_case5.txt AC 22 ms
5,292 KB
SMALL_case6.txt WA -
SMALL_case7.txt WA -
SMALL_case8.txt WA -
SMALL_case9.txt WA -
SMALL_case10.txt WA -
SMALL_case11.txt WA -
SMALL_case12.txt AC 23 ms
5,292 KB
SMALL_case13.txt WA -
SMALL_case14.txt WA -
SMALL_case15.txt WA -
SMALL_case16.txt AC 23 ms
5,296 KB
SMALL_case17.txt WA -
SMALL_case18.txt WA -
SMALL_case19.txt WA -
SMALL_case20.txt WA -
テストケース一括ダウンロード

ソースコード

diff #
N = int(input())
A = list(map(int,input().split()))

C = [1]

x = 1
y = N-1
for i in range(1,N-1) :
    C.append((C[-1] * y // x)%(10**9+7))
    x += 1
    y -= 1
C.append(1)

ans = 0

for a,c in zip(A,C) :
    ac = a*c
    ac %= 10**9+7
    ans += ac
ans %= 10**9+7
print(ans)

0