#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>

using ll = long long;
#define rep(i, n) for(int i = 0; i < (int)(n); ++i)

vector<int> op(vector<int> a, vector<int> b) {
	for(auto x : b) a.push_back(x);
	sort(a.begin(), a.end());
	while((int)a.size() > 10) a.pop_back();
	return a;
}
vector<int> e() {return {};}

int main() {
	int N, Q;
	cin >> N >> Q;
	vector<int> S(N);
	rep(i, N) cin >> S[i];
	
	vector<vector<int>> v(N);
	rep(i, N) v[i].push_back(S[i]);
	atcoder::segtree<vector<int>, op, e> seg(v);
	
	while(Q--) {
		int L, R, K;
		cin >> L >> R >> K, --L;
		
		vector<int> ret = seg.prod(L, R);
		
		ll ans = 0;
		rep(i, K) ans += ret[i];
		
		cout << ans << "\n";
	}
}