import sequtils,algorithm
setStdIoUnbuffered()
proc getchar_unlocked():char {. importc:"getchar_unlocked",header: "<stdio.h>" ,discardable.}
proc scan(): int =
  while true:
    let k = getchar_unlocked()
    if k < '0': return
    result = 10 * result + k.ord - '0'.ord

template useBinaryIndexedTree() = # 部分和検索 / 更新 O(log(N))
  type BinaryIndexedTree[T] = ref object
    data: seq[T] # 引数以下の部分和(Fenwick Tree)
  proc initBinaryIndexedTree[T](n:int):BinaryIndexedTree[T] =
    new(result)
    result.data = newSeq[T](n)
  proc len[T](self:BinaryIndexedTree[T]): int = self.data.len()
  proc update[T](self:var BinaryIndexedTree[T],i:int,val:T) =
    var i = i
    while i < self.len():
      self.data[i] += val
      i = i or (i + 1)
  proc `[]`[T](self:BinaryIndexedTree[T],i:int): T =
    var i = i
    while i >= 0:
      result += self.data[i]
      i = (i and (i + 1)) - 1
useBinaryIndexedTree()
let n = scan()
let Q = newSeqWith(n,(q:scan(),x:scan(),y:scan()))
var V = newSeq[int]()
for q in Q:
  V &= q.x
  V &= q.y
V = V.sorted(cmp).deduplicate()
var bit = initBinaryIndexedTree[int](V.len + 1)
var ans = 0
for q in Q:
  let x = V.lowerBound(q.x)
  let y = V.lowerBound(q.y)
  if q.q == 0 : bit.update(q.x,q.y)
  else:
    if x == 0 : ans += bit[y]
    else: ans += bit[y] - bit[x-1]
echo ans