2016 - Problem

#3728. 2016

Statistics

正の整数 $n$ と $m$ が与えられます。次の条件を満たす正の整数の組 $(a, b)$ の個数を求めてください：

$1 \leq a \leq n, 1 \leq b \leq m$;
$a \times b$ は $2016$ の倍数である。

入力

入力には $30$ 個以下のテストケースが含まれます。

各テストケースには $2$ 個の整数 $n, m$ が含まれます（$1 \leq n, m \leq 10^9$）。

出力

各テストケースについて、条件を満たす組の個数を表す整数を出力してください。

入出力例

入力 1

32 63
2016 2016
1000000000 1000000000

出力 1

1
30576
7523146895502644

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