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import java.util.*;
public class Question496 { ¡¡public static void main(String args[]) { ¡¡¡¡Integer nos[] = new Integer[14]; ¡¡¡¡for(int i = 0; i < 14; ++i) nos[i] = new Integer(i+1); ¡¡¡¡int count = 0; ¡¡¡¡List list = new Combination(Arrays.asList(nos), 4).getList();¡¡//¡¡¥¯¥é¥¹Combination¤Ï#19625¤ò»ÈÍÑ ¡¡¡¡for (Iterator iter = list.iterator(); iter.hasNext(); ) { ¡¡¡¡¡¡List eList = (List) iter.next(); ¡¡¡¡¡¡int a = ((Integer) eList.get(0)).intValue(); ¡¡¡¡¡¡int i = ((Integer) eList.get(1)).intValue(); ¡¡¡¡¡¡int u = ((Integer) eList.get(2)).intValue(); ¡¡¡¡¡¡int e = ((Integer) eList.get(3)).intValue(); ¡¡¡¡¡¡if (a + e == i + u) ++count; ¡¡¡¡} ¡¡¡¡System.out.println(count); ¡¡} } |
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Option Explicit Sub Macro1() Sheets("Sheet1").Select Cells(1, 1).Value = 0 Range("A1").Select Dim a(4) As Integer Call saiki(1, a()) Range("A1").Select End Sub Sub saiki(ByVal n As Integer, ByRef a() As Integer) Dim j As Integer If n = 1 Then a(1) = 1 Else a(n) = a(n - 1) + 1 End If While a(n) <= 14 - (4 - n) If n < 4 - 1 Then Call saiki(n + 1, a()) Else a(4) = a(2) + a(3) - a(1) If a(3) < a(4) And a(4) <= 14 Then Cells(1, 1).Value = Cells(1, 1).Value + 1 For j = 1 To 4 Cells(Cells(1, 1).Value, j + 1).Value = a(j) Next j Range("B" & Cells(1, 1).Value).Select End If End If a(n) = a(n) + 1 Wend End Sub |
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uchinyan |
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MAIL:uchi@sco.bekkoame.ne.jp ¡¡¡¡27127 |
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for($i = 1; $i <= 14; $i++){ for($j = 1; $j <= 14; $j++){ for($k = 1; $k <= 14; $k++){ for($l = 1; $l <= 14; $l++){ if($i == $j || $i == $k || $i == $l || $j == $k || $j == $l || $k == $l){ next; } @line = ($i, $j, $k, $l); @line = sort{$a <=> $b} @line; $calc = $line[0]*1000+$line[1]*100+$line[2]*10+$line[3]; if($record[$calc] != 0){ next; } $record[$calc]++; if($line[0] + $line[3] == $line[1] + $line[2]){ $count++; } } } } } print $count; |
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for $i(1..14){ for $j($i+1..14){ for $k($j+1..14){ for $l($k+1..14){ if($i+$l == $j+$k){ $c++; } }}}} print $c; |
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Option Explicit Sub ¥Ø¥¿¥ì²òË¡() Dim a As Integer, i As Integer, u As Integer, e As Integer, kosuu As Integer With Worksheets("sheet1") kosuu = 0 For a = 1 To 14 For i = 1 To 14 For u = 1 To 14 For e = 1 To 14 If (((a < i) And (i < u) And (u < e)) And (a + e = i + u)) Then kosuu = kosuu + 1 Next e, u, i, a .Range("A1").Value = kosuu End With End Sub |
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uchinyan |
#27133
(ô[i=1,n] xi)^2 = ô[i=1,n] (xi)^2 + 2 * ô[1 <= i < j <= n] xi * xj ¤Ê¤Î¤Ç¡¢ 2 * P ¢á 2 * ô[1 <= i < j <= n] xi * xj = (ô[i=1,n] xi)^2 - ô[i=1,n] (xi)^2 ±¦Êդϡ¢xi = -1 or 0 or 1 ¤Î¤È¤¤Ï¡¢ (ô[i=1,n] xi)^2 = 0 and ô[i=1,n] (xi)^2 = n ¤Î¤È¤¡¢ºÇ¾®¤Ç¤¹¡£ n ¤¬¶ö¿ô¤Î¤È¤¡¢Î㤨¤Ð¡¢x1 = 1, x2 = -1, ..., x_(n-1) = 1, x_n = -1 ¤Ç¼Â¸½²Äǽ¤Ç¡¢2 * Pmin = - n, Pmin = - n/2 ¤Ç¤¹¡£ ¤·¤«¤·¡¢n ¤¬´ñ¿ô¤Î¤È¤¤Ï¡¢»ÄÇ°¤Ê¤¬¤é¡¢¤³¤ì¤Ï¤Ç¤¤Þ¤»¤ó¡£ ¤·¤«¤·¡¢2 * P ¤ÏÀ°¿ô¤Ê¤Î¤Ç¡¢°ì¤Ä¤º¤ì¤¿ - n + 1 ¤ò¹Í¤¨¤ë¤È¡¢ Î㤨¤Ð¡¢x1 = 1, x2 = -1, ..., x_(n-2) = 1, x_(n-1) = -1, x_n = 1 ¤Ç¼Â¸½²Äǽ¤Ç¡¢Pmin = - (n-1)/2 ¤Ç¤¹¡£ ¤½¤³¤Ç¡¢¤Þ¤È¤á¤ë¤È¡¢[ ] ¤òÄ̾ï¤Î¥¬¥¦¥¹¤Îµ¹æ¤È¤·¤Æ¡¢ Pmin = - [n/2] ¤È¤Ê¤ë¤è¤¦¤Ç¤¹¡£ ¤¿¤À¡¢¤³¤Î²òË¡¤À¤È¡¢0 ¤ò»È¤Ã¤Æ¤Ê¤¤¤Ç¤¹¤Í¡£ ¤É¤³¤«´Ö°ã¤Ã¤Æ¤¤¤ë¤Î¤À¤í¤¦¤«¡¥¡¥¡¥¡© |
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uchinyan |
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