#include <iostream>
#define int long long
using namespace std;
const int N = 1e5 + 5;
int n, m, a[N];
signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> n >> m;
	while (m -- ) {
		int op;
		cin >> op;
		if (op == 1) {
			int s, l, r, cnt = 1;
			cin >> s >> l >> r;
			for (int i = l; i <= r; i ++ ) {
				a[i] += cnt * s;
				cnt ++ ;
			}
		}
		else {
			int l, r, sum = 0;
			cin >> l >> r;
			for (int i = l; i <= r; i ++ ) sum += a[i];
			cout << sum << "\n";
		}
	}
	return 0;
}