3 3 20
4 4
2 4
2 2
2 2
2 2
5 5
2 2
2 2
2 2
5 5
5 5
3 5
4 2
2 2
5 5
5 5
3 5
5 5
2 2
3 3
 1 10 10
1 19
2 12
2 8
2 16
2 2
2 4
1 9
2 18
2 14
2 10
 10 10 10
2 6
17 7
5 19
14 14
10 10
16 2
6 10
7 17
18 2
17 1
 10 10 10
12 10
8 4
10 8
15 13
11 11
8 6
9 19
13 19
6 4
19 19
 3 3 20
5 5
6 6
6 6
6 2
6 4
6 6
6 6
5 3
5 5
6 4
6 2
5 1
5 1
6 6
6 6
6 2
5 5
6 4
5 3
6 4
 3 3 20
1 1
4 4
1 1
4 4
3 3
1 1
3 1
6 6
1 1
4 6
3 1
3 3
6 4
3 1
6 6
4 6
3 1
4 6
4 6
5 1
 1 10 10
2 10
1 9
2 12
2 18
2 4
2 8
2 20
2 2
2 6
2 14
 10 10 10
2 10
4 6
1 19
7 15
20 18
3 19
11 17
9 17
16 2
19 15
 3 1 20
3 1
1 1
3 1
4 2
4 2
6 2
1 1
5 1
5 1
2 2
4 2
2 2
6 2
4 2
4 2
2 2
1 1
6 2
2 2
6 2
 10 10 10
10 12
19 7
14 12
10 10
8 6
19 19
18 2
12 2
16 4
16 2
 1 1 100
2 2
2 2
1 1
2 2
2 2
1 1
1 1
1 1
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2 2
2 2
1 1
1 1
1 1
1 1
1 1
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1 1
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1 1
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1 1
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2 2
1 1
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1 1
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1 1
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1 1
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1 1
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2 2
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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2 2
1 1
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1 1
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2 2
2 2
1 1
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2 2
2 2
2 2
2 2
1 1
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2 2
1 1
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1 1
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 1 10 10
1 15
1 19
2 16
1 17
2 4
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2 8
1 11
2 10
2 6
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8 8
5 3
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12 12
2 16
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2 4
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2 4
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1 3
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2 2
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4 2
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1 1
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 1 10 10
1 19
1 17
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1 15
2 8
2 6
2 16
2 14
2 4
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8 4
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9 19
16 2
13 7
11 7
7 17
6 6
1 1
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2 2
1 1
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1 1
2 4
1 1
1 1
2 2
1 1
2 2
2 2
1 1
1 5
2 6
1 1
1 1
2 4
1 3
2 6
1 5
2 6
2 2
2 6
1 1
2 4
1 5
1 1
2 6
1 5
2 4
1 3
2 6
1 5
2 6
2 4
2 2
1 3
2 6
2 4
1 3
1 1
2 2
1 3
1 1
2 6
1 5
1 5
2 4
2 4
1 3
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2 4
2 6
1 3
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1 3
2 6
2 2
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2 6
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1 3
2 6
2 4
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1 3
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2 2
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2 6
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 10 10 10
17 11
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8 8
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7 7
9 13
12 8
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15 13
13 17
 1 10 10
2 16
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2 10
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2 18
2 12
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2 14
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1 3
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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1 1
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2 2
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1 1
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4 6
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6 6
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4 6
 10 10 10
7 19
14 8
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6 6
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18 6
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11 9
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17 9
11 13
8 2
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3 1
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1 11
2 8
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1 9
1 3
1 7
1 15
1 17
 10 10 10
15 19
12 8
7 13
12 2
8 10
3 5
13 13
9 9
18 2
5 13
 2 3 20
1 3
1 1
1 1
1 3
2 4
2 4
1 1
2 6
1 1
1 3
3 1
2 6
1 1
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1 1
4 6
1 3
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1 1
3 1
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2 6
1 5
2 6
1 1
1 1
4 6
1 5
1 1
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1 3
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6 2
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4 6
4 4
3 1
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1 1
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 10 10 10
10 6
7 5
9 13
13 15
19 7
11 13
5 17
16 6
2 14
7 15
 1 1 20
1 1
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1 1
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2 4
2 8
1 19
2 2
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1 5
2 6
1 17
2 14
1 15
 3 3 20
4 2
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3 1
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6 2
6 4
1 5
2 6
5 5
3 1
5 3
3 3
2 6
3 3
2 6
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4 2
1 5
 10 10 10
1 19
3 17
12 4
16 20
5 19
5 17
20 2
15 9
16 4
4 16
 1 10 10
2 4
2 8
2 6
1 17
1 9
1 15
2 10
1 11
2 2
1 13
 10 10 10
9 17
9 13
8 10
12 2
18 14
18 6
10 6
13 19
2 12
10 8
 10 10 10
2 6
5 9
5 15
1 19
6 6
8 4
11 9
13 11
4 6
10 2
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16 2
12 6
8 2
12 2
3 15
6 6
7 17
4 16
11 9
2 6
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18 2
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9 19
6 10
20 18
15 19
2 2
11 13
17 13
3 15
 1 2 1
2 2
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2 4
1 13
1 7
2 14
1 19
1 17
2 2
1 15
1 11
2 6
 1 10 10
1 13
2 4
1 5
2 2
1 19
1 11
1 15
1 17
1 7
2 14
 1 10 10
1 17
2 4
2 2
1 11
1 15
1 19
2 6
2 8
2 12
1 13

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#include <bits/stdc++.h>
using namespace std;
template <class T>
int chkmax(T &a, T b) {
  if (b > a) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T>
int chkmin(T &a, T b) {
  if (b < a) {
    a = b;
    return 1;
  }
  return 0;
}
template <class iterator>
void output(iterator begin, iterator end, ostream &out = cerr) {
  while (begin != end) {
    out << (*begin) << " ";
    begin++;
  }
  out << endl;
}
template <class T>
void output(T x, ostream &out = cerr) {
  output(x.begin(), x.end(), out);
}
void fast_io() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
}
const int INF = 1e9;
struct node {
  int maxL, minR, bad;
  node() : maxL(-INF), minR(INF), bad(0) {}
  node(int _maxL, int _minR) : maxL(_maxL), minR(_minR), bad(_maxL > minR) {}
};
node combine(const node &a, const node &b) {
  node res;
  res.maxL = max(a.maxL, b.maxL);
  res.minR = min(a.minR, b.minR);
  res.bad = (a.bad | b.bad | a.minR < b.maxL);
  return res;
}
struct st {
  st() {}
  vector<node> t;
  int n;
  void init(int _n) {
    n = _n;
    t.resize(4 * n);
  }
  void update(int pos, node val, int v, int tl, int tr) {
    if (tl == tr) {
      t[v] = val;
    } else {
      int tm = (tl + tr) >> 1;
      if (pos <= tm) {
        update(pos, val, v * 2, tl, tm);
      } else {
        update(pos, val, v * 2 + 1, tm + 1, tr);
      }
      t[v] = combine(t[v * 2], t[v * 2 + 1]);
    }
  }
  int update(int pos, node val) {
    update(pos, val, 1, 0, n - 1);
    return (1 ^ t[1].bad);
  }
};
int n, m, q;
vector<set<int> > onlyL, onlyR;
st T;
void flip_cell(int r, int c) {
  int r1 = r / 2;
  int c1 = c / 2;
  if (r % 2 == 0) {
    if (onlyR[r1].find(c1) == onlyR[r1].end()) {
      onlyR[r1].insert(c1);
    } else {
      onlyR[r1].erase(c1);
    }
  } else {
    if (onlyL[r1].find(c1) == onlyL[r1].end()) {
      onlyL[r1].insert(c1);
    } else {
      onlyL[r1].erase(c1);
    }
  }
}
int update_ST(int r) {
  int maxL = (onlyL[r].empty() ? -INF : (*prev(onlyL[r].end()))) + 1;
  int minR = (onlyR[r].empty() ? INF : (*onlyR[r].begin()));
  int res = T.update(r, node(maxL, minR));
  return res;
}
int query(int r, int c) {
  flip_cell(r, c);
  return update_ST(r / 2);
}
void process_queries() {
  T.init(n);
  onlyL.resize(n);
  onlyR.resize(n);
  for (int i = 0; i < q; ++i) {
    int r, c;
    cin >> r >> c;
    r--;
    c--;
    int res = query(r, c);
    cout << (res ? "YES" : "NO") << '\n';
  }
}
signed main() {
  fast_io();
  cin >> n >> m >> q;
  process_queries();
}
