#include <bits/stdc++.h>
using namespace std;
int n,q;
int main()
{
    cin>>n;
    q = n*3;
    int t[q];
    char s[n][101];
    for (int i = 0; i < n; i ++ ){
        fgets(s[i],101,stdin);
        for (int j = 0; j <101; j ++ ){
            if(s[i][j]<91)
            {
               t[i] ++ ;
            }
            else 
             {t[i+n+1] ++;}}}
    for (int i = 0; i < n; i ++ ){
       if(t[i] > t[i+n]){
         for (int j = 0; j < 101; j ++ )
           if(s[i][j]>91)
           {s[i][j]=toupper(s[i][j]);}
        else 
         for(int j = 0; j < 101; j++)
           if(s[i][j]<91)
           {s[i][j]=tolower(s[i][j]);
           }}
    for (int i = 0; i < n; i ++ ){
      for (int j = 0; j < 101; j ++ )
        {printf("%c", s[i][j]);}}

    return 0;
}}