#include <bits/stdc++.h>
using namespace std;
namespace IO {
void setIn(string s) { freopen(s.c_str(), "r", stdin); }
void setOut(string s) { freopen(s.c_str(), "w", stdout); }
void setIO(string s = "") {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  cin.exceptions(cin.failbit);
  if (s.size()) {
    setIn(s + ".inp");
    setOut(s + ".out");
  } else {
  }
}
}  // namespace IO
using namespace IO;
namespace Function {
template <typename T1, typename T2>
void amax(T1 &a, T2 b) {
  if (typeid(a).name() == typeid(int).name() &&
      typeid(b).name() == typeid(long long).name()) {
    cout << "Error on amax";
    exit(0);
  }
  if (a < b) a = b;
}
template <typename T1, typename T2>
void amin(T1 &a, T2 b) {
  if (a > b) a = b;
}
template <typename T>
void compress(vector<T> &a) {
  sort(a.begin(), a.end());
  a.resize(unique(a.begin(), a.end()) - a.begin());
}
template <typename T>
long long sqr(T x) {
  return 1LL * x * x;
}
template <typename T1, typename T2>
long long gcd(T1 a, T2 b) {
  return (b == 0 ? a : gcd(b, a % b));
}
template <typename T1, typename T2>
long long lcm(T1 a, T2 b) {
  return 1LL * a / gcd(a, b) * b;
}
}  // namespace Function
using namespace Function;
namespace Output {
void print(int x) { cout << x << "\n"; }
void print(unsigned int x) { cout << x << "\n"; }
void print(long unsigned int x) { cout << x << "\n"; }
void print(long long x) { cout << x << "\n"; }
void print(unsigned long long x) { cout << x << "\n"; }
void print(float x) { cout << x << "\n"; }
void print(double x) { cout << x << "\n"; }
void print(long double x) { cout << x << "\n"; }
void print(char x) { cout << x << "\n"; }
void print(const char *x) { cout << x << "\n"; }
void print(string x) { cout << x << "\n"; }
void print(bool x) { cout << x << "\n"; }
template <class T, class... Ts>
void print(T t, Ts... ts) {
  cout << t << " ";
  print(ts...);
}
template <typename T1, typename T2>
void print(pair<T1, T2> a) {
  print(a.first, a.second);
}
template <typename T>
void print(T a) {
  for (auto it : a) {
    print(it);
  }
}
template <class T, class... Ts>
void prine(T t, Ts... ts) {
  print(t, ts...);
  exit(0);
}
}  // namespace Output
using namespace Output;
const int dx[] = {1, -1, 0, 0};
const int dy[] = {0, 0, 1, -1};
const int INF = 1e9;
const long long INFL = 1e18;
const int MOD = 1e9 + 7;
const int N = 1e5 + 10;
bool cur[10][N];
map<pair<int, int>, set<pair<int, int> > > t;
int main() {
  setIO();
  int n, q;
  cin >> n >> q;
  int cnt = 0;
  for (int i = 0; i < q; i++) {
    int x, y;
    cin >> x >> y;
    cur[x][y] ^= 1;
    if (cur[x][y] == 0) {
      cnt -= t[{x, y}].size();
      for (auto it : t[{x, y}]) {
        t[it].erase({x, y});
      }
      t[{x, y}].clear();
    } else {
      if (x == 1) {
        for (int j = -1; j <= 1; j++) {
          if (cur[2][y + j]) {
            t[{2, y + j}].insert({x, y});
            t[{x, y}].insert({2, y + j});
            cnt++;
          }
        }
      } else {
        for (int j = -1; j <= 1; j++) {
          if (cur[1][y + j]) {
            t[{1, y + j}].insert({x, y});
            t[{x, y}].insert({1, y + j});
            cnt++;
          }
        }
      }
    }
    print((cnt == 0 ? "YES" : "NO"));
  }
  return 0;
}
