信息学奥林匹克竞赛-打印图形

var
i,j:longint;
begin
for i:=1 to 10 do
begin
write('':20-2*i);
for j:=1 to 10 do write('@');
writeln;
end;
readln;
end.



var
i,j:longint;

begin
for i:=1 to 9 do
begin
write('':20-2*i);
for j:=1 to 2*i-1 do write('*':2);
writeln;
end;
readln;
end.



var
i,j:longint;

begin
for i:=1 to 9 do
begin
write('':20-2*i);
for j:=1 to 2*i-1 do write(i:2);
writeln;
end;
readln;
end.




var
i,j:longint;

begin
for i:=1 to 9 do
begin
write('':20-2*i);
for j:=1 to i do write(j:2);
for j:=i-1 downto 1 do write(j:2);
writeln;
end;
for i:=8 downto 1 do
begin
write('':20-2*i);
for j:=1 to i do write(j:2);
for j:=i-1 downto 1 do write(j:2);
writeln;
end;
readln;
end.