3 3 20
4 4
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2 2
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5 5
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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
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4 4
3 3
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1 1
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3 1
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3 1
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4 6
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4 6
4 6
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 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
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 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
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1 1
2 2
2 2
1 1
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 10 10
1 15
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2 16
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2 8
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2 10
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8 4
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7 17
6 6
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2 6
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2 6
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1 1
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2 8
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 10 10 10
15 19
12 8
7 13
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3 5
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9 9
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5 13
 2 3 20
1 3
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2 4
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1 1
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1 1
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1 1
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2 6
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6 2
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4 6
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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
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2 4
2 8
1 19
2 2
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1 5
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1 17
2 14
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 3 3 20
4 2
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3 1
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2 6
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2 6
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1 5
 10 10 10
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
 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
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3 15
6 6
7 17
4 16
11 9
2 6
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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
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1 11
2 6
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1 13
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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;
using big = long long;
const int N = 200200;
struct Node {
  int l, r;
  bool err;
  int mxa, mnb;
  Node *c[2] = {nullptr, nullptr};
} mem[N * 4], *cur = mem;
map<pair<int, int>, int> status;
int n, m, q;
Node *init(int l, int r) {
  Node *x = cur++;
  x->l = l;
  x->r = r;
  x->mxa = -1;
  x->mnb = N + 1;
  x->err = false;
  if (l == r) {
    return x;
  }
  int mid = l + r >> 1;
  x->c[0] = init(l, mid);
  x->c[1] = init(mid + 1, r);
  return x;
}
set<int> cells[4][N];
set<pair<int, int>> broken;
Node *root;
void update(Node *x) {
  x->mxa = max(x->c[0]->mxa, x->c[1]->mxa);
  x->mnb = min(x->c[0]->mnb, x->c[1]->mnb);
  x->err = x->c[0]->err || x->c[1]->err || (x->c[1]->mxa >= x->c[0]->mnb);
}
void change(Node *x, int pos, int v, const function<void(Node *, int)> &upd) {
  if (x->l == x->r) {
    upd(x, v);
    x->err = x->mnb < x->mxa;
    return;
  }
  int mid = x->l + x->r >> 1;
  change(x->c[pos > mid], pos, v, upd);
  update(x);
}
void upda(Node *x, int v) { x->mxa = v; }
void updb(Node *x, int v) { x->mnb = v; }
void remove(int cell_type, int cellx, int celly) {
  cells[cell_type][cellx].erase(celly);
  switch (cell_type) {
    case 1:
      change(root, cellx, *cells[1][cellx].rbegin(), upda);
      break;
    case 2:
      change(root, cellx, *cells[2][cellx].begin(), updb);
      break;
    case 3:
      broken.erase({cellx, celly});
      break;
  }
}
void insert(int cell_type, int cellx, int celly) {
  cells[cell_type][cellx].insert(celly);
  switch (cell_type) {
    case 1:
      change(root, cellx, *cells[1][cellx].rbegin(), upda);
      break;
    case 2:
      change(root, cellx, *cells[2][cellx].begin(), updb);
      break;
    case 3:
      broken.insert({cellx, celly});
      break;
  }
}
int calc_cell_status(int cellx, int celly) {
  int st = 0;
  st |= int(status[{cellx * 2, celly * 2}]) << 1;
  st |= status[{cellx * 2 + 1, celly * 2 + 1}];
  return st;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin >> n >> m >> q;
  for (int i = 1; i <= n; ++i) {
    cells[1][i].insert(-1);
    cells[2][i].insert(N + 1);
  }
  root = init(0, n - 1);
  while (q--) {
    int x, y;
    cin >> x >> y;
    --x;
    --y;
    int cellx = x / 2, celly = y / 2;
    remove(calc_cell_status(cellx, celly), cellx, celly);
    status[{x, y}] = !status[{x, y}];
    insert(calc_cell_status(cellx, celly), cellx, celly);
    bool err = root->err || !broken.empty();
    cout << (err ? "NO" : "YES") << "\n";
  }
  return 0;
}
