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

#define rep(i,n) for(int i = 0; i < (int)(n); i++)
constexpr int inf = 2e9;
/*
#include <atcoder/all>
using namespace atcoder;

#include <boost/multiprecision/cpp_int.hpp>
#include <boost/math/common_factor_rt.hpp>
namespace mp = boost::multiprecision;
*/
using ll = long long;
int main()
{
    int N,Q;
    cin >> N >> Q;
    vector S(N + 1,0LL);
    for (int i = 1; i <= N; i++) cin >> S[i];
    for (int i = 1; i <= N; i++) S[i] += S[i - 1];
    while (Q--)
    {
        int l,r,k;
        cin >> l >> r >> k;
        cout << S[r] - S[l - 1] << "\n";
    }
}