#include <algorithm>
#include <atcoder/all>
#include <bitset>
#include <cassert>
#include <cmath>
#include <ctime>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std;
using namespace atcoder;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--)
#define repk(i, k, n) for (int i = k; i < (int)(n); i++)
#define all(v) v.begin(), v.end()
#define mod1 1000000007
#define mod2 998244353
#define mod3 100000007
#define vi vector<int>
#define vs vector<string>
#define vc vector<char>
#define vl vector<ll>
#define vb vector<bool>
#define vvi vector<vector<int>>
#define vvc vector<vector<char>>
#define vvl vector<vector<ll>>
#define vvb vector<vector<bool>>
#define vvvi vector<vector<vector<int>>>
#define vvvl vector<vector<vector<ll>>>
#define pii pair<int, int>
#define pil pair<int, ll>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define vpii vector<pair<int, int>>
#define vpll vector<pair<ll, ll>>
#define vvpii vector<vector<pair<int, int>>>
#define vvpll vector<vector<pair<ll, ll>>>

// using mint = modint998244353;

template <typename T>
void debug(T e) {
    cerr << e << endl;
}

template <typename T>
void debug(vector<T> &v) {
    rep(i, v.size()) { cerr << v[i] << " "; }
    cerr << endl;
}

template <typename T>
void debug(vector<vector<T>> &v) {
    rep(i, v.size()) {
        rep(j, v[i].size()) { cerr << v[i][j] << " "; }
        cerr << endl;
    }
}

template <typename T>
void debug(vector<pair<T, T>> &v) {
    rep(i, v.size()) { cerr << v[i].first << " " << v[i].second << endl; }
}

template <typename T>
void debug(set<T> &st) {
    for (auto itr = st.begin(); itr != st.end(); itr++) {
        cerr << *itr << " ";
    }
    cerr << endl;
}

template <typename T>
void debug(multiset<T> &ms) {
    for (auto itr = ms.begin(); itr != ms.end(); itr++) {
        cerr << *itr << " ";
    }
    cerr << endl;
}

template <typename T>
void debug(map<T, T> &mp) {
    for (auto itr = mp.begin(); itr != mp.end(); itr++) {
        cerr << itr->first << " " << itr->second << endl;
    }
}

void debug_out() { cerr << endl; }

template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << H << " ";
    debug_out(T...);
}

ll op(ll a, ll b) { return a + b; }

ll e() { return 0LL; }

int main() {
    ll N;
    cin >> N;
    vector<ll> X(N);
    for (ll i = 0; i < N; i++) {
        cin >> X[i];
    }
    vector<ll> diff_sum(N, 0);
    for (ll i = 0; i < N - 1; i++) {
        if (X[i] == X[i + 1]) {
            diff_sum[i + 1] = diff_sum[i] + 1;
        } else {
            diff_sum[i + 1] = diff_sum[i];
        }
    }
    vector<ll> kinds(N + 1, 0);
    ll Q;
    cin >> Q;
    for (ll i = 0; i < Q; i++) {
        ll l, r, S;
        cin >> l >> r >> S;
        l--;
        r--;
        // 幅によって値を確認する
        if (r - l >= 90) {
            // 答えが 1 かどうか
            if (diff_sum[r] - diff_sum[l] >= 60) {
                cout << 0 << endl;
            } else {
                if (S >= (1LL << (diff_sum[r] - diff_sum[l]))) {
                    cout << 1 << endl;
                } else {
                    cout << 0 << endl;
                }
            }
        } else {
            vector<ll> vec(r - l + 1);
            for (ll j = l; j <= r; j++) {
                vec[j - l] = X[j];
            }
            ll len = r - l + 1;
            // debug(vec);

            // 答えで全探索
            ll answer = 0;
            for (ll mid = 1; mid <= len + 1; mid++) {
                vector<ll> prev_idx(len + 1, -1);
                ll now_kind = 0;

                ll left = 0;
                ll right = 0;

                while (true) {
                    if (now_kind <= mid) {
                        if (right == len) {
                            prev_idx[right] = left;
                            break;
                        } else {
                            prev_idx[right] = left;
                            if (kinds[vec[right]] == 0) {
                                now_kind++;
                            }
                            kinds[vec[right]]++;
                            right++;
                        }
                    } else {
                        kinds[vec[left]]--;
                        if (kinds[vec[left]] == 0) {
                            now_kind--;
                        }
                        left++;
                    }
                }
                segtree<ll, op, e> dp_seg(len + 1);
                dp_seg.set(0, 1);
                bool inf = false;
                for (ll j = 1; j <= len; j++) {
                    ll sum_val = dp_seg.prod(prev_idx[j], j);
                    if (sum_val > S) {
                        inf = true;
                        break;
                    }
                    dp_seg.set(j, sum_val);
                }
                if (inf) {
                    break;
                } else {
                    answer = mid;
                }
                for (ll j = 0; j < len; j++) {
                    kinds[vec[j]] = 0;
                }
            }
            // debug(ans);
            if (answer >= len) {
                cout << -1 << endl;
            } else {
                cout << answer << endl;
            }
        }
    }
}