Word.cpp

#include<bits/stdc++.h>
using namespace std;
#define fer(i,a,b) for(re i = a; i<b; ++i)
#define re register int
#define pb push_back
#define ll long long
#define mod 1000000007
using namespace std;
typedef vector<int> vi;
typedef pair<int,int> pi;


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif
    string s;
    cin>>s;
    int cs=0,cb=0;
    for(int i=0;i<s.size();i++){
        if(s[i]>96) cs++;
        else cb++;
    }
    if(cs<=cb) transform(s.begin(), s.end(), s.begin(), ::tolower);
    else transform(s.begin(), s.end(), s.begin(), ::toupper);
    cout<<s<<endl;
    return 0;
}