var
a : array [1..9] integer;
i : integer;
begin
for i := 1 to 9 do
if i mod 3 = 1 then a[i] := i
else if i mod 3 = 2 then a[i] := sqr (i - 1)
else a[i] := a[i - 1] div i;
for i := 1 to 9 do
write (a[i], ' ');
end.
var
b, a : array [1..15] of integer;
i, sa, sb : integer;
begin
randomize;
sa := 0; sb := 0;
for i := 1 to 15 do
begin
a[i] := trunc (random (100)) + 1;
write (a[i], ' ');
sa := sa + a[i];
end;
writeln;
for i := 1 to 15 do
begin
b[i] := sqr (a[i]) - a[i]);
write (b[i], ' ');
sb := sb + b[i];
end;
writeln;
writeln (abs (sb - sa));
end.
PascalABC.NET
begin
var arr := ArrRandom(15, 5,500);
arr.Where(x -> x mod 3 = 0).Where(x -> x mod 9 = 0).Product.Println;
end.