uses crt;
var
i,j:byte;
a:array[1..3] of integer;
b:array[1..3,1..3] of integer;
begin
clrscr;
for i:=1 to 3 do
begin
write('Vvedite a',i,'='); readln(a[i]);
end;
for i:=1 to 3 do
for j:=1 to 3 do
b[i,j]:=a[i]-3*a[j];
writeln('Matrica b');
for i:=1 to 3 do
begin
for j:=1 to 3 do
write(b[i,j]:6);
writeln;
end;
readln;
end.