var
a, b, c, avg: integer;
begin
readln(a);
readln(b);
readln(c);
if a < b then
begin
if b > c then
begin
if a > c then avg := a
else avg := c;
end
else avg := b;
end
else
begin
if (a > b) and (c > a) then avg := a
else avg := c;
if (a > b) and (b > c) then avg := b;
end;
if (a = b) or (b = c) then avg := b;
if a = c then avg := a;
writeln(avg);
end.