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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2 2
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2 2
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1 1
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2 2
2 2
2 2
1 1
2 2
2 2
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2 2
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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
 1 10 10
1 15
1 19
2 16
1 17
2 4
2 2
2 8
1 11
2 10
2 6
 10 10 10
10 2
19 9
19 17
8 8
5 3
20 4
12 12
2 16
5 19
2 4
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2 4
2 4
1 3
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3 3
2 4
3 3
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3 3
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1 3
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4 2
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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
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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
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1 1
2 4
1 1
1 1
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2 2
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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
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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2 4
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1 3
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2 6
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 10 10 10
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 1 10 10
2 16
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2 18
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1 1
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 3 3 20
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 10 10 10
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6 6
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8 2
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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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3 1
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1 1
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1 3
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1 1
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2 6
1 5
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1 1
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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
13 15
19 7
11 13
5 17
16 6
2 14
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 1 1 20
1 1
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2 4
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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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6 2
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1 5
2 6
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3 3
2 6
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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
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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
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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;
const int MAXN = 2e5 + 5;
int n, m, q, x, y;
unordered_map<int, unordered_map<int, int> > state[2];
set<int> L[MAXN], R[MAXN];
template <class T>
void read(T& x, T f = 1, char ch = getchar()) {
  x = 0;
  while (ch < '0' || ch > '9') f = (ch == '-' ? -1 : 1), ch = getchar();
  while (ch >= '0' && ch <= '9') x = x * 10 + ch - 48, ch = getchar();
  x *= f;
}
struct Node {
  Node *lson, *rson;
  int l, r;
  int miL, mxR;
  bool tag;
  Node(int _l, int _r) {
    l = _l, r = _r;
    miL = m + 1, mxR = 0;
    tag = 1;
  }
} * root;
void update(Node* cur) {
  cur->miL = min(cur->lson->miL, cur->rson->miL);
  cur->mxR = max(cur->lson->mxR, cur->rson->mxR);
  if (!cur->lson->tag || !cur->rson->tag || cur->lson->miL <= cur->rson->mxR)
    cur->tag = 0;
  else
    cur->tag = 1;
}
void build(Node*& cur, int l, int r) {
  cur = new Node(l, r);
  if (l == r) return;
  int mid = l + r >> 1;
  build(cur->lson, l, mid);
  build(cur->rson, mid + 1, r);
}
void modify(Node* cur, int x, int val, int tag) {
  if (cur->l == x && cur->r == x) {
    if (tag == 2)
      cur->mxR = val;
    else
      cur->miL = val;
    cur->tag = cur->miL > cur->mxR;
    return;
  }
  int mid = cur->l + cur->r >> 1;
  if (x <= mid)
    modify(cur->lson, x, val, tag);
  else
    modify(cur->rson, x, val, tag);
  update(cur);
}
int main() {
  read(n), read(m);
  read(q);
  build(root, 1, n);
  while (q--) {
    read(x), read(y);
    int i = x + 1 >> 1, j = y + 1 >> 1;
    if (!state[x & 1][i][j]) {
      if (x & 1) {
        state[x & 1][i][j] = 1;
        L[i].insert(j);
        modify(root, i, *L[i].begin(), 1);
      } else {
        state[x & 1][i][j] = 1;
        R[i].insert(j);
        auto it = R[i].end();
        modify(root, i, *(--it), 2);
      }
    } else {
      if (x & 1) {
        state[x & 1][i][j] = 0;
        L[i].erase(j);
        modify(root, i, L[i].empty() ? m + 1 : *L[i].begin(), 1);
      } else {
        state[x & 1][i][j] = 0;
        R[i].erase(j);
        auto it = R[i].end();
        modify(root, i, R[i].empty() ? 0 : *(--it), 2);
      }
    }
    if (!root->tag)
      puts("NO");
    else
      puts("YES");
  }
  return 0;
}
