class Bit:
    def __init__(self, n):
        self.size = n
        self.tree = [0]*(n+1)

    def __iter__(self):
        psum = 0
        for i in range(self.size):
            csum = self.sum(i+1)
            yield csum - psum
            psum = csum
        raise StopIteration()

    def __str__(self):  # O(nlogn)
        return str(list(self))

    def sum(self, i):
        # [0, i) の要素の総和を返す
        #if not (0 <= i <= self.size): raise ValueError("error!")
        s = 0
        while i>0:
            s += self.tree[i]
            i -= i & -i
        return s

    def add(self, i, x):
        #if not (0 <= i < self.size): raise ValueError("error!")
        i += 1
        while i <= self.size:
            self.tree[i] += x
            i += i & -i

    def __getitem__(self, key):
        if not (0 <= key < self.size): raise IndexError("error!")
        return self.sum(key+1) - self.sum(key)

    def __setitem__(self, key, value):
        # 足し算と引き算にはaddを使うべき
        if not (0 <= key < self.size): raise IndexError("error!")
        self.add(key, value - self[key])

from operator import itemgetter
N, Q = map(int, input().split())
A = list(map(int, input().split()))
bit = Bit(N)
bit2 = Bit(N)
for i, a in enumerate(A):
    bit.add(i, a)
Ans = [-1] * Q
ILRX = []
A_ = sorted(enumerate(A), key=itemgetter(1))
for i in range(Q):
    q, l, r, x = map(int, input().split())
    ILRX.append((i, l-1, r, x))
ILRX.sort(key=itemgetter(3))
idx_a_ = 0
for i, l, r, x in ILRX:
    while idx_a_ < N:
        idx_a, a = A_[idx_a_]
        if a < x:
            bit.add(idx_a, -a)
            bit2.add(idx_a, 1)
            idx_a_ += 1
        else:
            break
    Ans[i] = bit.sum(r)-bit.sum(l) - (r-l-bit2.sum(r)+bit2.sum(l))*x

print("\n".join(map(str, Ans)))