program р53;
uses crt;
const n=3;
var a:array[1..n] of string;
i: integer;
begin
clrscr;
for i:=1 to n do
begin
write(i, ' ');readln(a[i]);
end;
writeln;
for i:=1 to n do
begin
write(a[i],' ');a[n+1-i]);
end;
readln;
end.