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

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

int main() {
	int N, Q;
	cin >> N >> Q;
	vector<int> S(N);
	rep(i, N) cin >> S[i];
	
	vector<ll> T(N + 1, 0);
	rep(i, N) T[i + 1] = T[i] + S[i];
	
	while(Q--) {
		int L, R, K;
		cin >> L >> R >> K;
		
		cout << T[R] - T[L - 1] << endl;
	}
}