import sys; input = sys.stdin.buffer.readline
sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

class SegmentTree(object):
	#N:処理する区間の長さ
	def __init__(self, N):
		self.N = N
		self.N0 = 2 ** (N - 1).bit_length()
		self.initVal = 0
		self.data = [self.initVal] * (2 * self.N0)

	# 区間クエリの種類
	def calc(self, a, b):
		return a + b

	# セグメント木の中身をリストAで初期化
	def initialize(self, A):
		for i in range(self.N):
			self.data[self.N0 - 1 + i] = A[i]
		for i in range(self.N0 - 2, -1, -1):
			self.data[i] = self.calc(self.data[2 * i + 1], self.data[2 * i + 2])

	#k番目の値をxに更新
	def update(self, k, x):
		k += self.N0 - 1
		self.data[k] = x
		while k > 0:
			k = (k - 1) // 2
			self.data[k] = self.calc(self.data[2 * k + 1], self.data[2 * k + 2])

	#区間[l, r]の演算値
	def query(self, l, r):
		L = l + self.N0; R = r + self.N0 + 1
		m = self.initVal
		while L < R:
			if R & 1:
				R -= 1
				m = self.calc(m, self.data[R - 1])
			if L & 1:
				m = self.calc(m, self.data[L - 1])
				L += 1
			L >>= 1; R >>= 1

		return m

#処理内容
def main():
	N, Q = getlist()
	A = getlist()
	Alist = [[A[i], i] for i in range(N)]
	query = []
	Seg01 = SegmentTree(N)
	Segval = SegmentTree(N)
	Seg01.initialize([1] * N)
	Segval.initialize(A)
	ans = [0] * Q
	for i in range(Q):
		q = getlist()
		l = q[1]; r = q[2]; x = q[3]
		l -= 1; r -= 1
		query.append([x, l, r, i])
	
	Alist.sort(key=lambda x: x[0])
	query.sort(key=lambda x: x[0])
	i = 0; j = 0
	while i < N and j < Q:
		Ai, itr = Alist[i]
		x, l, r, ansitr = query[j]
		if Ai < x:
			Seg01.update(itr, 0)
			Segval.update(itr, 0)
			i += 1
		else:
			anspre = Segval.query(l, r) - x * Seg01.query(l, r)
			ans[ansitr] = anspre
			j += 1

	for t in range(j, Q):
		x, l, r, ansitr = query[t]
		ans[ansitr] = 0

	for i in range(Q):
		print(ans[i])

if __name__ == '__main__':
	main()