import std.algorithm, std.container, std.conv, std.math, std.range, std.typecons, std.stdio, std.string;

auto rdsp(){return readln.splitter;}
void pick(R,T)(ref R r,ref T t){t=r.front.to!T;r.popFront;}
void readV(T...)(ref T t){auto r=rdsp;foreach(ref v;t)pick(r,v);}

void main()
{
  int n; readV(n);

  auto t = new int[](1000);
  foreach (i; 0..n) {
    string s; readV(s);
    ++t[s.length-2];
  }

  auto m = 0, e = 0;
  foreach (i; 0..1000)
    if (t[i] >= m) {
      m = t[i];
      e = i;
    }

  writeln(e);
}