#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <stdio.h>
#include <math.h>
#include <iostream>
#include <iomanip>
#include <vector>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <queue>
#include <stack>
#include <numeric>
#include <algorithm>
using namespace std;
using ll = long long;
//#include <atcoder/all>
// using namespace atcoder;
// using mint = modint;
#define rep(i, n) for (int i = 0; i < n; i++)
#define endl '\n'
#define print(n) cout << (n) << endl
#define ALL(a) (a).begin(), (a).end()
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, q__;
    cin >> n >> q__;
    vector<ll> a(n);
    rep(i, n) cin >> a[i];
    for (int q_ = 0; q_ < q__; q_++)
    {
        int l, r;
        ll x;
        cin >> l >> r >> x;
        l--;
        long ans = 0;
        for (int i = l; i < r; i++)
            ans += min(a[i], x);
        cout << ans << endl;
    }
}