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
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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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2 2
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2 2
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1 1
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2 2
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1 1
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2 2
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 1 10 10
1 15
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2 16
1 17
2 4
2 2
2 8
1 11
2 10
2 6
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8 8
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12 12
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1 3
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2 8
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2 14
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8 4
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16 2
13 7
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7 17
6 6
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 5
2 6
1 1
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1 3
2 6
1 5
2 6
2 2
2 6
1 1
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1 1
2 6
1 5
2 4
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2 6
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2 6
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2 6
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6 6
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3 1
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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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1 3
2 4
2 4
1 1
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1 1
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1 1
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1 3
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2 6
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4 6
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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
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9 13
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19 7
11 13
5 17
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2 14
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 1 1 20
1 1
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2 4
2 8
1 19
2 2
2 10
1 5
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1 17
2 14
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4 2
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3 1
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6 2
6 4
1 5
2 6
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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
 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;
struct Node {
  int l, r;
  int loA, hiB;
  bool good;
};
Node seg[1000000];
int N, M, Q;
set<int> stA[200005], stB[200005];
set<pair<int, int>> st;
void build(int l, int r, int idx) {
  seg[idx].good = 1;
  seg[idx].l = l;
  seg[idx].r = r;
  seg[idx].hiB = 1e9;
  if (l == r) {
    return;
  }
  int mid = l + r >> 1;
  build(l, mid, 2 * idx);
  build(mid + 1, r, 2 * idx + 1);
}
void upd(int p, int idx) {
  if (seg[idx].l == seg[idx].r) {
    seg[idx].loA = (stA[p].empty() ? 0 : *stA[p].rbegin());
    seg[idx].hiB = (stB[p].empty() ? 1e9 : *stB[p].begin());
    seg[idx].good = seg[idx].loA < seg[idx].hiB;
    return;
  }
  int mid = seg[idx].l + seg[idx].r >> 1;
  if (p <= mid) {
    upd(p, 2 * idx);
  } else {
    upd(p, 2 * idx + 1);
  }
  seg[idx].good = seg[2 * idx + 1].loA < seg[2 * idx].hiB;
  seg[idx].loA = max(seg[2 * idx].loA, seg[2 * idx + 1].loA);
  seg[idx].hiB = min(seg[2 * idx].hiB, seg[2 * idx + 1].hiB);
  seg[idx].good &= (seg[2 * idx].good && seg[2 * idx + 1].good);
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  cin >> N >> M >> Q;
  build(1, M, 1);
  while (Q--) {
    int x, y;
    cin >> x >> y;
    swap(x, y);
    if (st.count(make_pair(x, y))) {
      st.erase(make_pair(x, y));
      bool isB = x % 2 == 1;
      x = (x + 1) / 2;
      y = (y + 1) / 2;
      if (!isB) {
        stA[x].erase(y);
      } else {
        stB[x].erase(y);
      }
    } else {
      st.insert(make_pair(x, y));
      bool isB = x % 2 == 1;
      x = (x + 1) / 2;
      y = (y + 1) / 2;
      if (!isB) {
        stA[x].insert(y);
      } else {
        stB[x].insert(y);
      }
    }
    upd(x, 1);
    if (seg[1].good) {
      cout << "YES\n";
    } else {
      cout << "NO\n";
    }
  }
}
