jackfiled
89ce313b77
Reviewed-on: https://git.bupt-hpc.cn/jackfiled/CanonSharp/pulls/4 Co-authored-by: jackfiled <xcrenchangjun@outlook.com> Co-committed-by: jackfiled <xcrenchangjun@outlook.com>
37 lines
494 B
ObjectPascal
37 lines
494 B
ObjectPascal
program main;
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var
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x, y: array[0..0] of integer;
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a, b: integer;
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function exgcd(a, b: integer; var x, y: integer): integer;
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var
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t, r: integer;
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begin
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if b = 0 then
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begin
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x := 1;
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y := 0;
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exgcd := a;
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end
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else
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begin
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r := exgcd(b, a mod b, x, y);
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t := x;
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x := y;
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y := (t - (a div b) * y);
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exgcd := r;
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end;
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end;
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begin
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a := 7;
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b := 15;
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x[0] := 1;
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y[0] := 1;
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exgcd(a, b, x[0], y[0]);
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x[0] := ((x[0] mod b) + b) mod b;
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write(x[0]);
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end.
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