description: Kawasiro Nitori is excellent in engineering. Thus she has been appointed to help maintain trains.
  
  There are n models of trains, and Nitori's department will only have at most one train of each model at any moment. In the beginning, there are no trains, at each of the following m days, one train will be added, or one train will be removed. When a train of model i is added at day t, it works for x_i days (day t inclusive), then it is in maintenance for y_i days, then in work for x_i days again, and so on until it is removed.
  
  In order to make management easier, Nitori wants you to help her calculate how many trains are in maintenance in each day.
  
  On a day a train is removed, it is not counted as in maintenance.
  
  Input
  
  The first line contains two integers n, m (1 ≤ n,m ≤ 2 ⋅ 10^5).
  
  The i-th of the next n lines contains two integers x_i,y_i (1 ≤ x_i,y_i ≤ 10^9).
  
  Each of the next m lines contains two integers op, k (1 ≤ k ≤ n, op = 1 or op = 2). If op=1, it means this day's a train of model k is added, otherwise the train of model k is removed. It is guaranteed that when a train of model x is added, there is no train of the same model in the department, and when a train of model x is removed, there is such a train in the department.
  
  Output
  
  Print m lines, The i-th of these lines contains one integers, denoting the number of trains in maintenance in the i-th day.
  
  Examples
  
  Input
  
  
  3 4
  10 15
  12 10
  1 1
  1 3
  1 1
  2 1
  2 3
  
  
  Output
  
  
  0
  1
  0
  0
  
  
  Input
  
  
  5 4
  1 1
  10000000 100000000
  998244353 1
  2 1
  1 2
  1 5
  2 5
  1 5
  1 1
  
  
  Output
  
  
  0
  0
  0
  1
  
  Note
  
  Consider the first example:
  
  The first day: Nitori adds a train of model 3. Only a train of model 3 is running and no train is in maintenance.
  
  The second day: Nitori adds a train of model 1. A train of model 1 is running and a train of model 3 is in maintenance.
  
  The third day: Nitori removes a train of model 1. The situation is the same as the first day.
  
  The fourth day: Nitori removes a train of model 3. There are no trains at all.
solution: #include <bits/stdc++.h>
  using namespace std;
  using Vi = vector<int>;
  using i64 = long long;
  using ll = long long;
  using Pi = pair<int, int>;
  mt19937 mrand(time(0));
  int rnd(int x) { return mrand() % x; }
  const int N = 500005;
  const int M = 40005;
  static struct FastInput {
    static constexpr int BUF_SIZE = 1 << 20;
    char buf[BUF_SIZE];
    size_t chars_read = 0;
    size_t buf_pos = 0;
    FILE* in = stdin;
    char cur = 0;
    inline char get_char() {
      if (buf_pos >= chars_read) {
        chars_read = fread(buf, 1, BUF_SIZE, in);
        buf_pos = 0;
        buf[0] = (chars_read == 0 ? -1 : buf[0]);
      }
      return cur = buf[buf_pos++];
    }
    inline void tie(int) {}
    inline explicit operator bool() { return cur != -1; }
    inline static bool is_blank(char c) { return c <= ' '; }
    inline bool skip_blanks() {
      while (is_blank(cur) && cur != -1) {
        get_char();
      }
      return cur != -1;
    }
    inline FastInput& operator>>(char& c) {
      skip_blanks();
      c = cur;
      return *this;
    }
    inline FastInput& operator>>(string& s) {
      if (skip_blanks()) {
        s.clear();
        do {
          s += cur;
        } while (!is_blank(get_char()));
      }
      return *this;
    }
    template <typename T>
    inline FastInput& read_integer(T& n) {
      n = 0;
      if (skip_blanks()) {
        int sign = +1;
        if (cur == '-') {
          sign = -1;
          get_char();
        }
        do {
          n += n + (n << 3) + cur - '0';
        } while (!is_blank(get_char()));
        n *= sign;
      }
      return *this;
    }
    template <typename T>
    inline typename enable_if<is_integral<T>::value, FastInput&>::type operator>>(
        T& n) {
      return read_integer(n);
    }
    inline FastInput& operator>>(__int128& n) { return read_integer(n); }
    template <typename T>
    inline typename enable_if<is_floating_point<T>::value, FastInput&>::type
    operator>>(T& n) {
      n = 0;
      if (skip_blanks()) {
        string s;
        (*this) >> s;
        sscanf(s.c_str(), "%lf", &n);
      }
      return *this;
    }
  } fast_input;
  static struct FastOutput {
    static constexpr int BUF_SIZE = 1 << 20;
    char buf[BUF_SIZE];
    size_t buf_pos = 0;
    static constexpr int TMP_SIZE = 1 << 20;
    char tmp[TMP_SIZE];
    FILE* out = stdout;
    inline void put_char(char c) {
      buf[buf_pos++] = c;
      if (buf_pos == BUF_SIZE) {
        fwrite(buf, 1, buf_pos, out);
        buf_pos = 0;
      }
    }
    ~FastOutput() { fwrite(buf, 1, buf_pos, out); }
    inline FastOutput& operator<<(char c) {
      put_char(c);
      return *this;
    }
    inline FastOutput& operator<<(const char* s) {
      while (*s) {
        put_char(*s++);
      }
      return *this;
    }
    inline FastOutput& operator<<(const string& s) {
      for (int i = 0; i < (int)s.size(); i++) {
        put_char(s[i]);
      }
      return *this;
    }
    template <typename T>
    inline char* integer_to_string(T n) {
      char* p = tmp + TMP_SIZE - 1;
      if (n == 0) {
        *--p = '0';
      } else {
        bool is_negative = false;
        if (n < 0) {
          is_negative = true;
          n = -n;
        }
        while (n > 0) {
          *--p = (char)('0' + n % 10);
          n /= 10;
        }
        if (is_negative) {
          *--p = '-';
        }
      }
      return p;
    }
    template <typename T>
    inline typename enable_if<is_integral<T>::value, char*>::type stringify(T n) {
      return integer_to_string(n);
    }
    inline char* stringify(__int128 n) { return integer_to_string(n); }
    template <typename T>
    inline typename enable_if<is_floating_point<T>::value, char*>::type stringify(
        T n) {
      sprintf(tmp, "%.17f", n);
      return tmp;
    }
    template <typename T>
    inline FastOutput& operator<<(const T& n) {
      auto p = stringify(n);
      for (; *p != 0; p++) {
        put_char(*p);
      }
      return *this;
    }
  } fast_output;
  int main() {
    ios::sync_with_stdio(false);
    fast_input.tie(0);
    int n, m;
    fast_input >> n >> m;
    int BL = 300;
    vector<Pi> a(n);
    for (int i = 0; i < n; ++i) fast_input >> a[i].first >> a[i].second;
    Vi ans(m + 1);
    vector<vector<Pi>> nd(n);
    vector<Pi> day(m);
    for (int i = 0; i < m; ++i) {
      fast_input >> day[i].first >> day[i].second;
      --day[i].second;
      if (day[i].first == 1)
        nd[day[i].second].emplace_back(i, m - 1);
      else
        nd[day[i].second].back().second = i - 1;
    }
    for (int i = 0; i < n; ++i) {
      int x = a[i].first, y = a[i].second;
      if (x + y < BL) continue;
      for (auto j : nd[i]) {
        for (int k = j.first; k <= j.second; k += x + y) {
          if (k + x <= j.second) {
            ++ans[k + x];
            --ans[min(k + x + y, j.second + 1)];
          }
        }
      }
    }
    for (int i = 1; i < m; ++i) ans[i] += ans[i - 1];
    vector<Vi> B(BL);
    for (int i = 1; i < BL; ++i) B[i].resize(i, 0);
    Vi vis(n);
    for (int i = 0; i < m; ++i) {
      int x = a[day[i].second].first, y = a[day[i].second].second;
      if (x + y < BL) {
        if (day[i].first == 1) {
          for (int j = i + x; j < i + x + y; ++j) ++B[x + y][j % (x + y)];
          vis[day[i].second] = i;
        } else {
          int t = vis[day[i].second];
          for (int j = t + x; j < t + x + y; ++j) --B[x + y][j % (x + y)];
        }
      }
      for (int j = 1; j < BL; ++j) ans[i] += B[j][i % j];
    }
    for (int i = 0; i < m; ++i) fast_output << ans[i] << '\n';
    return 0;
  }
  