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- begin
- var average := 0.0;
- var n := ReadLnInteger('Введите размер матрицы:');
- var arr: array[,]of integer := new integer[n, n];
- WriteLn('Исходная матрица:');
- for var i := 0 to arr.GetLength(0) - 1 do
- begin
- for var j := 0 to arr.GetLength(1) - 1 do
- begin
- arr[i, j] := Random(-50, 50);
- Write(arr[i, j]:5);
- average += i = j ? arr[i, j] / n : 0;
- end;
- WriteLn;
- end;
- WriteLn('Ответ: ', average:0:2);
- end.
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