#include <bits/stdc++.h>
using namespace std;
struct IO {
  char buf[(1 << 20)], *p1, *p2;
  char pbuf[(1 << 20)], *pp;
  IO() : p1(buf), p2(buf), pp(pbuf) {}
  inline char gc() {
    return getchar();
    if (p1 == p2) p2 = (p1 = buf) + fread(buf, 1, (1 << 20), stdin);
    return p1 == p2 ? ' ' : *p1++;
  }
  inline bool blank(char ch) {
    return ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t';
  }
  template <class T>
  inline void read(T &x) {
    register double tmp = 1;
    register bool sign = 0;
    x = 0;
    register char ch = gc();
    for (; !(ch >= '0' && ch <= '9'); ch = gc())
      if (ch == '-') sign = 1;
    for (; (ch >= '0' && ch <= '9'); ch = gc()) x = x * 10 + (ch - '0');
    if (ch == '.')
      for (ch = gc(); (ch >= '0' && ch <= '9'); ch = gc())
        tmp /= 10.0, x += tmp * (ch - '0');
    if (sign) x = -x;
  }
  inline void read(char *s) {
    register char ch = gc();
    for (; blank(ch); ch = gc())
      ;
    for (; !blank(ch); ch = gc()) *s++ = ch;
    *s = 0;
  }
  inline void read(char &c) {
    for (c = gc(); blank(c); c = gc())
      ;
  }
  template <class t>
  inline void write(t x) {
    if (x < 0)
      putchar('-'), write(-x);
    else {
      if (x > 9) write(x / 10);
      putchar('0' + x % 10);
    }
  }
} io;
const int mod = 1e9 + 7;
const int mo = 998244353;
const int N = 1e5 + 5;
int n, m, b[N], Q[N][3];
map<int, int> tr[N];
inline void Add(int x, int y, int v) {
  while (x <= m) {
    tr[x][y] += v;
    x += x & (-x);
  }
}
inline int Ask(int x, int y) {
  int ans = 0;
  while (x) {
    ans += tr[x][y];
    x -= x & (-x);
  }
  return ans;
}
int main() {
  io.read(n);
  for (int i = (1); i <= (n); i++) {
    for (int j = (0); j <= (2); j++) io.read(Q[i][j]);
    b[i] = Q[i][1];
  }
  sort(b + 1, b + n + 1);
  m = unique(b + 1, b + n + 1) - b - 1;
  for (int i = (1); i <= (n); i++)
    Q[i][1] = lower_bound(b + 1, b + m + 1, Q[i][1]) - b;
  for (int i = (1); i <= (n); i++) {
    int opt, x, t;
    opt = Q[i][0], t = Q[i][1], x = Q[i][2];
    if (opt == 1) Add(t, x, 1);
    if (opt == 2) Add(t, x, -1);
    if (opt == 3) io.write(Ask(t, x)), puts("");
  }
  return 0;
}
