#include <bits/stdc++.h>
using namespace std;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int cnt[12]{};
    int n;
    cin >> n;
    for (int i = 2; i < 10; i++) cnt[i] = 4;
    cnt[10] = 16;
    cnt[11] = 4;
    int sum = 0;
    while (n--) {
        int x;
        cin >> x;
        cnt[x]--;
        sum += x;
    }
    int f = 0;
    for (int i = 2; i <= 11; i++) {
        if (i <= 21 - sum) f += cnt[i];
        else f -= cnt[i];
    }
    cout << (f > 0 ? "VUCI" : "DOSTA");
    return 0;
}
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