var a,b,c:integer;
begin
writeln('введите а');
readln(a);
writeln('введите b');
readln(b);
writeln('введите c');
readln(c);
if (a>b) and (a>c) then writeln(a*a) else
if (b>c) then writeln(b*b) else writeln(c*c);
if (a<b) and (a<c) then writeln(a*a) else
if (b<c) then writeln(b*b) else writeln(c*c)
end.