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Limite de temps : 3 s Limite de mémoire : 512 MB Points totaux : 100

#6204. 押韻

Statistiques

韻要怎麼押?棋要怎麼下?敵要怎麼殺?旗要怎麼插?

現在你想要寫一首歌詞,一共有 $nd$ 個字,你一共設計了 $k$ 種韻腳,每個字恰好要符合一種韻腳。並且只有當每種韻腳在歌詞中出現的字數恰為 $d$ 的倍數時,這首歌才好聽。試問一共有多少種韻腳的搭配方法,使得歌詞好聽?你只需要回答方案數對於 $1049874433$ 取模的結果即可。

輸入格式

第一行三個整數 $n, k, d$,如題意所示。

輸出格式

一行一個整數,表示答案。

範例

範例輸入 1

2 2 2

範例輸出 1

8

範例輸入 2

2 3 4

範例輸出 2

213

範例輸入 3

2 4 6

範例輸出 3

5548

資料範圍

對於 $100\%$ 的資料,保證 $0\le n\le 10^9, 1\le k\le 2000, d \in \{1, 2, 3, 4, 6\}$。

測試點編號$n$$k$$d$
$1$$\le 5\times 10^4$$\le 2\times 10^3$$2$
$2$$3$
$3$$4$
$4$$6$
$5$$\le 10^9$$1$
$6$
$7$$2$
$8$
$9$$3$
$10$
$11$$\le 10^3$$4$
$12$
$13$$\le 2\times 10^3$
$14$
$15$$\le 10^3$$6$
$16$
$17$
$18$
$19$$\le 2\times 10^3$
$20$

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