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
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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
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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
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1 1
1 1
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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2 2
1 1
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2 2
2 2
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2 2
2 2
2 2
2 2
1 1
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 1 10 10
1 15
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2 16
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2 4
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2 8
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8 8
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2 4
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1 15
2 8
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2 14
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8 4
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7 17
6 6
1 1
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1 1
2 4
1 1
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1 5
2 6
1 1
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2 4
1 3
2 6
1 5
2 6
2 2
2 6
1 1
2 4
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1 1
2 6
1 5
2 4
1 3
2 6
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2 6
2 4
2 2
1 3
2 6
2 4
1 3
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2 6
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2 4
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1 3
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2 4
2 6
1 3
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2 6
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1 11
2 8
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1 9
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1 15
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 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
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2 4
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1 1
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1 1
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3 1
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1 1
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2 6
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6 2
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 10 10 10
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19 7
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 1 1 20
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2 14
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2 6
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1 19
3 17
12 4
16 20
5 19
5 17
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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
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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
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8 2
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3 15
6 6
7 17
4 16
11 9
2 6
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9 19
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20 18
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11 13
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3 15
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1 13
1 7
2 14
1 19
1 17
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1 11
2 6
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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;
const int N = (int)2e5 + 7;
int n, m, q;
set<int> ds[N];
set<int> us[N];
struct T {
  int min_d;
  int max_u;
  bool ok;
};
T operator+(T a, T b) {
  int min_d = min(a.min_d, b.min_d);
  int max_u = max(a.max_u, b.max_u);
  bool ok = a.ok & b.ok & (a.min_d > b.max_u);
  return {min_d, max_u, ok};
}
T t[4 * N];
void rec(int v, int tl, int tr, int i) {
  if (tr < i || i < tl) {
    return;
  }
  if (tl == tr) {
    auto it1 = ds[tl].begin();
    t[v].min_d = *it1;
    auto it2 = us[tl].end();
    it2--;
    t[v].max_u = *it2;
    t[v].ok = (t[v].min_d > t[v].max_u);
    return;
  }
  int tm = (tl + tr) / 2;
  rec(2 * v, tl, tm, i);
  rec(2 * v + 1, tm + 1, tr, i);
  t[v] = t[2 * v] + t[2 * v + 1];
}
void ins(int r, int c) {
  int x = (r + 1) / 2, y = (c + 1) / 2;
  if (r % 2 == 1) {
    ds[x].insert(y);
  } else {
    us[x].insert(y);
  }
  rec(1, 1, n, x);
}
void del(int r, int c) {
  int x = (r + 1) / 2, y = (c + 1) / 2;
  if (r % 2 == 1) {
    ds[x].erase(y);
  } else {
    us[x].erase(y);
  }
  rec(1, 1, n, x);
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> n >> m >> q;
  for (int i = 1; i <= n; i++) {
    ds[i].insert((int)1e9);
    us[i].insert(-(int)1e9);
    rec(1, 1, n, i);
  }
  set<pair<int, int>> s;
  for (int i = 1; i <= q; i++) {
    int r, c;
    cin >> r >> c;
    if (s.count({r, c}) == 0) {
      ins(r, c);
      s.insert({r, c});
    } else {
      del(r, c);
      s.erase({r, c});
    }
    if (t[1].ok) {
      cout << "YES\n";
    } else {
      cout << "NO\n";
    }
  }
  return 0;
}
