program f;
label 1;
var
p, i, j, n: integer;
s: string;
bb: boolean;
begin
1:
write('Pi= ');
readln(p);
if p > 9999 then
begin
writeln('ERROR: Pi < 9999');
goto 1
end;
str(p, s);
bb := false;
for i := 1 to length(s) do
begin
n := 0;
for j := 1 to length(s) do
if i <> j then
if s[i] = s[j] then
inc(n);
if n = 2 then
bb := true;
end;
writeln(bb);
readln;
end.