n,q=map(int,input().split())
a=list(map(int,input().split()))

B=317
st1=[0]*B*B
st2=[0]*B
st3=[0]*B

e=[(-a[i],0,i,i) for i in range(n)]
for i in range(q):
  t,l,r,x=map(int,input().split())
  e+=[(-x,i+1,l-1,r-1)]
e.sort()

ans=[0]*q

for x,f,l,r in e:
  x=-x
  if f==0:
    y=l//B
    st1[l]+=x
    st2[y]+=x
    st3[y]+=1
  else:
    a=0
    yl=l//B
    yr=r//B
    if yl==yr:
      for i in range(l,r+1):
        a+=max(st1[i]-x,0)
    else:
      for i in range(l,yl*B+B):
        a+=max(st1[i]-x,0)
      for i in range(yr*B,r+1):
        a+=max(st1[i]-x,0)
      for i in range(yl+1,yr):
        a+=st2[i]-x*st3[i]
    ans[f-1]=a
print(*ans,sep="\n")