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31 lines
460 B
31 lines
460 B
let
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proc putmany (n: Integer, c: Char) ~
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let
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var i: Integer
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in
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begin
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i := 0;
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while i < n do
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begin i := i+1; put (c) end
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end;
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var n: Integer; var r: Integer;
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const mark ~ '@'
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in
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begin
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getint (var n); geteol ();
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r := 0;
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while r < (n-1) do
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begin
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r := r + 1;
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putmany (n-r, ' '); put (mark);
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if r >= 2 then
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begin
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putmany (2*r - 3, ' '); put (mark)
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end
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else; !skip
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puteol ()
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end;
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putmany (2*n - 1, mark)
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end
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