#include <bits/stdc++.h>
#define rep(a,b,c) for(auto a = (b); a != (c); a++)
#define repD(a,b,c) for(auto a = (b); a != (c); a--)
#define repIn(a, b) for(auto& a : (b))
#define repIn2(a, b, c) for(auto& [a, b] : (c))
constexpr bool dbg = 1;
#define DEBUG if constexpr(dbg)
#define DC DEBUG std::cerr
#define eol std::endl
#define ll long long
#define pb push_back
using namespace std;
int main() {
ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
int n, q;
cin >> n >> q;
vector<ll> V(n);
rep(i, 0, n) cin >> V[i];
rep(_, 0, q) {
int t, l, r;
cin >> t >> l >> r;
l--; r--;
ll ans = 0;
rep(i, l, r + 1) {
ll xd = 0;
rep(j, 0, min(t, i) + 1) xd = max(xd, V[i - j]);
ans += xd;
}
cout << ans << eol;
}
}
