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
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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
1 1
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2 2
2 2
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1 1
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1 1
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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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10 2
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8 8
5 3
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12 12
2 16
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2 4
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2 4
2 4
1 3
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 1 10 10
1 19
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1 15
2 8
2 6
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2 14
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8 4
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16 2
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11 7
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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2 6
1 1
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1 3
2 6
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2 6
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2 6
1 1
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2 6
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2 4
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2 6
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2 6
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2 6
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1 1
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1 1
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 10 10 10
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12 8
7 13
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3 5
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9 9
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 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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2 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
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1 1
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 10 10 10
10 6
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19 7
11 13
5 17
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 1 1 20
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4 2
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1 5
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2 6
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 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
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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
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
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20 18
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2 2
11 13
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3 15
 1 2 1
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1 13
1 7
2 14
1 19
1 17
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1 11
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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;
int N, M, Q;
const int MAXN = 2e5 + 5;
set<int> odd[MAXN], even[MAXN];
struct node {
  int l, r;
  int mi, mx;
  bool flag;
} tr[MAXN << 2];
void update(int id) {
  if (tr[id].l == tr[id].r) {
    tr[id].flag = tr[id].mi > tr[id].mx;
  } else {
    if (tr[id << 1].flag && tr[id << 1 | 1].flag &&
        (tr[id << 1].mi > tr[id << 1 | 1].mx))
      tr[id].flag = true;
    else
      tr[id].flag = false;
    tr[id].mi = min(tr[id << 1].mi, tr[id << 1 | 1].mi);
    tr[id].mx = max(tr[id << 1].mx, tr[id << 1 | 1].mx);
  }
}
void update_odd(int id, int pos, int val) {
  if (tr[id].l == tr[id].r) {
    tr[id].mi = val;
    update(id);
    return;
  }
  int mid = (tr[id].l + tr[id].r) >> 1;
  if (pos <= mid)
    update_odd(id << 1, pos, val);
  else
    update_odd(id << 1 | 1, pos, val);
  update(id);
}
void update_even(int id, int pos, int val) {
  if (tr[id].l == tr[id].r) {
    tr[id].mx = val;
    update(id);
    return;
  }
  int mid = (tr[id].l + tr[id].r) >> 1;
  if (pos <= mid)
    update_even(id << 1, pos, val);
  else
    update_even(id << 1 | 1, pos, val);
  update(id);
}
void build(int id, int l, int r) {
  tr[id].l = l;
  tr[id].r = r;
  tr[id].mi = M + 1;
  tr[id].mx = 0;
  tr[id].flag = true;
  if (l == r) return;
  int mid = (l + r) >> 1;
  build(id << 1, l, mid);
  build(id << 1 | 1, mid + 1, r);
}
int main() {
  scanf("%d%d%d", &N, &M, &Q);
  for (int i = 1; i <= N; i++) {
    odd[i].insert(M + 1);
    even[i].insert(0);
  }
  build(1, 1, N);
  int x, y;
  while (Q--) {
    scanf("%d%d", &x, &y);
    if (x & 1) {
      x = (x + 1) / 2;
      y = (y + 1) / 2;
      if (odd[x].find(y) != odd[x].end())
        odd[x].erase(y);
      else
        odd[x].insert(y);
      update_odd(1, x, *odd[x].begin());
    } else {
      x /= 2;
      y /= 2;
      if (even[x].find(y) != even[x].end())
        even[x].erase(y);
      else
        even[x].insert(y);
      update_even(1, x, *--even[x].end());
    }
    if (tr[1].flag)
      puts("YES");
    else
      puts("NO");
  }
  return 0;
}
