n,q = map(int,input().split())
a = list(map(int,input().split()))
qs = []
for i in range(q):
  l,r,x = map(int,input().split())
  qs.append((l-1,x,i,-1))
  qs.append((r,x,i,1))
qs.sort(key = lambda x:x[0])
def compress(arr):
  *s, = set(arr)
  return {num: i for i,num in enumerate(sorted(s))}
ca = compress(a)
sa = sorted(a)

seg_len = 1<<19 # > 5*(10**5)
seg = [0]*(2*seg_len)
seg2 = [0]*(2*seg_len)


def update(pos,x,seg):
  pos += seg_len
  seg[pos] += x 
  while True: 
    pos >>= 1 
    if not pos: break 
    seg[pos] = seg[pos<<1] + seg[pos<<1|1]

def get_query(l,r,seg):
  l += seg_len; r += seg_len
  res = 0 
  while l < r: 
    if l & 1: 
      res += seg[l] 
      l += 1 
    if r & 1: 
      r -= 1 
      res += seg[r] 
    l >>= 1; r >>= 1
  return res
now = 0
ans =[0]*q
from bisect import bisect_left, bisect_right
for l,x,i,ki in qs:
  while now < l:
    update(ca[a[now]], 1, seg)
    update(ca[a[now]], a[now], seg2)
    now += 1
  xx = bisect_right(sa,x)
  s = get_query(0, xx, seg2)
  t = get_query(0, xx, seg)
  ans[i] +=ki*(s+(l-t)*x)
print(*ans, sep = "\n")