#include <bits/stdc++.h>
    #define ll long long
    #define pb 	push_back
    using namespace std;
    int main(){
    ll n , k; cin >> n >> k; 
    ll a[n]; 
    for(int i = 1 ; i <= n ; i++) {
        cin >> a[i];
    } 
     for(int i = 1 ; i <= k ; i++){
        ll dem = 0;
        ll l,r,q; cin >> l >> r >> q; 
         for(int i = l ; i <= r ; i++){
            dem += a[i];
         }
         cout << dem << endl;
    }  
    }