#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define all(x) begin(x), end(x)
const int INF = 1e9;
int dx[4] = {1, -1, 0, 0};
int dy[4] = {0, 0, 1, -1};

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    ll N, Q;
    cin >> N >> Q;
    vector<ll> A(N);
    rep(i, N) cin >> A[i];
    rep(i, Q)
    {
        ll t;
        cin >> t;
        if (t == 1)
        {
            ll x, y;
            cin >> x >> y;
            A[x - 1] = y;
        }
        else
        {
            ll l, r, a, b;
            cin >> l >> r >> a >> b;
            ll ans = 0;
            for (int i = l - 1; i < r; i++)
            {
                ans += max(a, min(b, A[i]));
            }
            cout << ans << endl;
        }
    }
    return 0;
}