/* -*- coding: utf-8 -*-
 *
 * 3612.cc:  No.3612 Breaking door keys・・LL BREAK ver.・・- yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* constant */

const int MAX_N = 200000;

/* typedef */

using ll = long long;

/* global variables */

int as[MAX_N];
ll ass[MAX_N + 1];

/* subroutines */

/* main */

int main() {
  int n, qn;
  scanf("%d%d", &n, &qn);
  for (int i = 0; i < n; i++) scanf("%d", as + i);

  for (int i = 0; i < n; i++) ass[i + 1] = ass[i] + as[i];

  while (qn--) {
    int l, r, k;
    scanf("%d%d%d", &l, &r, &k), l--;

    printf("%lld\n", ass[r] - ass[l]);
  }
  
  return 0;
}