//Bai 1
 
#include<bits/stdc++.h>
using namespace std;
#define el "\n"
#define ll long long
#define ull unsigned long long
#define se second
#define fi first
#define be begin
#define en end
#define Faster cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
void Run(int n, int a[])
{
    ll ans = 0;
    for(int i = 0; i < n; i++)
    {
        cin >> a[i];
        if(a[i] % 5 == 0) ans += 1ll*a[i];
    }
    cout << ans;
}
int main()
{
    Faster;
    int n; cin >> n;
    int a[n];
    Run(n, a);
    return 0;
}
 
 

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