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

using ll = int64_t;
using ul = uint64_t;
using ld = long double;
using vi = vector<int>;
using vd = vector<double>;
using vc = vector<char>;
using vs = vector<string>;
using vb = vector<bool>;
using vl = vector<ll>;
using vvi = vector<vi>;
using vvd = vector<vd>;
using vvc = vector<vc>;
using vvb = vector<vb>;
using vvl = vector<vl>;
using mint = modint998244353;
using vm = vector<mint>;

int main() {
  int N,Q;
  cin >> N >> Q;
  vl S(N);
  for (int i = 0; i < N; i++) {
    cin >> S[i];
    if (i > 0) S[i] += S[i - 1];
  }
  for (int i = 0; i < Q; i++) {
    int L,R,K;
    cin >> L >> R >> K;
    L--,R--;
    ll ans = S[R];
    if (L > 0) ans -= S[L - 1];
    cout << ans << endl;
  }
  return 0;
}