#include <fstream>
#include <math.h>
#include <vector>
#include <set>
#include <algorithm>
#include <cstring>
//#include <unordered_map>
#include <iomanip>
#include <time.h>
#include <stdio.h>
#include <bitset>
#include <map>
#define MAX 500000000000
//#include <iostream>
#include <windows.h>
#include <deque>
using namespace std;
ifstream cin("jocul.in");
ofstream cout("jocul.out");
//ifstream cin("graf.in");
//ofstream cout("graf.out");
int x[408];
int main()
{
    int mil = 100000, s = 0;
    for(int i = 0; i < 5; i++)
    {
        int a;
        cin >> a;
        x[a]++;
        s += a;
    }
    mil = s;
    for(int i = 101; i >= 0; i--)
        if(x[i] >= 3)
        {
            mil = min(s - i * 3, mil);
        }
        else
        if(x[i] == 2)
        {
            mil = min(s - i * 2, mil);
        }
        cout << mil;
}