def rec_str(a):return"".join(["[",", ".join(rec_str(x)for x in a),"]"])if isinstance(a,list)else str(a)
class BIT:
	def __init__(self,x):
		if isinstance(x,int):
			self.N=x
			self.F=[0]*(x+1)
		else:
			self.N=len(x)
			self.F=[0]*(self.N+1)
			for j in R(1,self.N+1):
				i=j-1
				self.F[j]=x[i]
				k=j-(j&-j)
				while i>k:
					self.F[j]+=self.F[i]
					i-=i&-i
	def copy(self):
		a=__class__([])
		a.N=__self__.N
		a.F=__self__.F[:]
		return a
	def Add(self,i,u):
		i+=1
		while i<=self.N:
			self.F[i]+=u
			i+=i&-i
	def Set(self,i,u):self.Add(i,u-self.Get(i))
	def Get(self,i):return self.IntervalSum(i,i)
	def InitialSegmentSum(self,r):
		assert(r>-2)
		a=0
		i=min(r+1,self.N)
		while i:
			a+=self.F[i]
			i-=i&-i
		return a
	def IntervalSum(self,l,r):return self.InitialSegmentSum(r)-self.InitialSegmentSum(l-1)
	def list(self):return[self.Get(i)for i in R(self.N)]
	def __str__(self):return rec_str(self.list())
	def Search(self,u):#Computing minimum of j such that InitialSegmentSum(j)>=u or j==N
		j=s=n=0
		p=1<<17 #131072
		while p:
			k=j|p
			p>>=1
			if k<=self.N:
				n+=self.F[k]
				if n<u:s,j=n,k
				else:n=s
		return j

import heapq
R=range
J=lambda:list(map(int,input().split()))
N,Q=J()
A=J()
B=[J()for q in R(Q)]
E=[]
for i in R(N):heapq.heappush(E,(A[i],i,0))
for q in R(Q):heapq.heappush(E,(B[q][2],q,1))
bitA=BIT(A)
bitX=BIT([-1]*N)
C=[0]*Q
while E:
	x,i,t=heapq.heappop(E)
	if t:l,r,X=B[i];C[i]=bitA.IntervalSum(l-1,r-1)+X*bitX.IntervalSum(l-1,r-1)
	else:bitA.Set(i,-x);bitX.Set(i,1)
for c in C:print(c)