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
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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 10 10
1 15
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2 16
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8 8
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2 4
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1 3
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1 19
1 17
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1 15
2 8
2 6
2 16
2 14
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8 4
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9 19
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7 17
6 6
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
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
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
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1 3
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2 6
1 5
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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
2 2
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7 19
14 8
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6 6
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4 4
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11 9
1 15
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2 12
17 9
11 13
8 2
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4 2
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1 3
4 2
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2 2
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1 3
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3 1
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1 11
2 8
1 13
2 2
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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
2 4
1 1
4 6
1 3
1 3
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
1 3
6 2
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4 6
4 4
3 1
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1 1
1 3
 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 2
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2 4
2 8
1 19
2 2
2 10
1 5
2 6
1 17
2 14
1 15
 3 3 20
4 2
3 5
3 1
2 2
3 1
5 5
6 2
6 4
1 5
2 6
5 5
3 1
5 3
3 3
2 6
3 3
2 6
3 3
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
 10 10 10
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
15 13
9 19
6 10
20 18
15 19
2 2
11 13
17 13
3 15
 1 2 1
2 2
 1 10 10
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;
pair<int, int> inv(pair<int, int> a) {
  if (a.first % 2 == 1) {
    return {a.first + 1, a.second + 1};
  }
  return {a.first - 1, a.second - 1};
}
vector<bool> t;
vector<int> a, b;
void merge(int v, int l, int r) {
  t[v] = (t[v * 2 + 1] && t[v * 2 + 2]);
  if (a[v * 2 + 1] <= b[v * 2 + 2]) t[v] = 0;
  a[v] = min(a[v * 2 + 1], a[v * 2 + 2]);
  b[v] = max(b[v * 2 + 1], b[v * 2 + 2]);
}
void update(int v, int l, int r, int i, int x, int y) {
  if (l + 1 == r) {
    a[v] = x;
    b[v] = y;
    t[v] = (x > y);
    return;
  }
  int m = (l + r) / 2;
  if (i < m)
    update(v * 2 + 1, l, m, i, x, y);
  else
    update(v * 2 + 2, m, r, i, x, y);
  merge(v, l, r);
}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n, m, q;
  cin >> n >> m >> q;
  t.resize(4 * n, 1);
  a.resize(4 * n, 1e9);
  b.resize(4 * n, -1e9);
  set<int> c[n], d[n];
  for (int i = 0; i < n; i++) {
    c[i].insert(1e9);
    d[i].insert(-1e9);
  }
  for (int test = 0; test < q; test++) {
    pair<int, int> x;
    cin >> x.first >> x.second;
    x = inv(x);
    if (x.first % 2 == 0) {
      if (c[x.first / 2 - 1].find(x.second / 2 - 1) !=
          c[x.first / 2 - 1].end()) {
        c[x.first / 2 - 1].erase(x.second / 2 - 1);
      } else {
        c[x.first / 2 - 1].insert(x.second / 2 - 1);
      }
    } else {
      if (d[x.first / 2].find(x.second / 2) != d[x.first / 2].end()) {
        d[x.first / 2].erase(x.second / 2);
      } else {
        d[x.first / 2].insert(x.second / 2);
      }
    }
    update(0, 0, n, (x.first - 1) / 2, *c[(x.first - 1) / 2].begin(),
           *d[(x.first - 1) / 2].rbegin());
    if (t[0] == 1)
      cout << "YES" << '\n';
    else
      cout << "NO" << '\n';
  }
}
