#define _CRT_SECURE_NO_WARNINGS
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
int main()
{
ll a, b;
cin >> a >> b;
ll cnt = a / b;
ll cha = a%b;
if (cnt > cha) {
cout << "niuniu eats less than others" << endl;
}
else if (cnt == cha) {
puts("same");
}
else {
cout << "niuniu eats more than others" << endl;
}
return 0;
}
#define _CRT_SECURE_NO_WARNINGS
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
const int N = 1e6 + 50;
ll a[N];
int main()
{
int n;
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
sort(a + 1, a + 1 + n);
ll sum = 0;
/// 每两个玩具免单一个
if (n % 2 == 0) {
for (int i = 2; i <= n; i += 2) {
sum += a[i];
}
}
else {
for (int i = 1; i <= n; i += 2) {
sum += a[i];
}
}
cout << sum ;
return 0;
}