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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2 2
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2 2
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2 2
1 1
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2 2
2 2
1 1
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2 2
2 2
2 2
2 2
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
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19 17
8 8
5 3
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2 16
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2 4
2 4
1 3
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3 3
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2 14
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8 4
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7 17
6 6
1 1
15 15
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2 2
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1 1
2 4
1 1
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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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2 6
1 5
2 4
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2 6
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2 6
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2 6
2 4
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2 6
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1 1
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1 1
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7 19
14 8
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6 6
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18 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
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
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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 1
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1 3
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1 1
3 1
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2 6
1 5
2 6
1 1
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4 6
1 5
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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 3 3 20
4 2
3 5
3 1
2 2
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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
 10 10 10
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;
const int N = 2e5 + 10;
set<int> L[N], R[N];
set<int>::iterator it;
int tr[2][N * 4], flag[N * 4];
void build(int x, int l, int r) {
  if (l == r) {
    tr[0][x] = N;
    tr[1][x] = 0;
    return;
  }
  int mid = (l + r) >> 1;
  build(x * 2, l, mid);
  build(x * 2 + 1, mid + 1, r);
  tr[0][x] = min(tr[0][x * 2], tr[0][x * 2 + 1]);
  tr[1][x] = max(tr[1][x * 2], tr[1][x * 2 + 1]);
}
void update(int opt, int x, int l, int r, int pos, int v) {
  if (l == r) {
    tr[opt][x] = v;
    if (tr[0][x] <= tr[1][x])
      flag[x] = 1;
    else
      flag[x] = 0;
    return;
  }
  int mid = (l + r) >> 1;
  if (pos <= mid)
    update(opt, x * 2, l, mid, pos, v);
  else
    update(opt, x * 2 + 1, mid + 1, r, pos, v);
  if (!opt)
    tr[opt][x] = min(tr[opt][x * 2], tr[opt][x * 2 + 1]);
  else
    tr[opt][x] = max(tr[opt][x * 2], tr[opt][x * 2 + 1]);
  if (flag[x * 2] || flag[x * 2 + 1] || tr[0][x * 2] <= tr[1][x * 2 + 1])
    flag[x] = 1;
  else
    flag[x] = 0;
}
int main() {
  int n, m, q, x, y;
  scanf("%d%d%d", &n, &m, &q);
  build(1, 1, n);
  for (int i = 1; i <= n; i++) L[i].insert(N), R[i].insert(0);
  for (int i = 1; i <= q; i++) {
    scanf("%d%d", &x, &y);
    if (x % 2 == 1 && y % 2 == 1) {
      x = x / 2 + 1;
      y = y / 2 + 1;
      if (L[x].find(y) != L[x].end())
        L[x].erase(y);
      else
        L[x].insert(y);
      it = L[x].begin();
      update(0, 1, 1, n, x, *it);
      if (!flag[1])
        printf("YES\n");
      else
        printf("NO\n");
    } else if (x % 2 == 0 && y % 2 == 0) {
      x /= 2;
      y /= 2;
      if (R[x].find(y) != R[x].end())
        R[x].erase(y);
      else
        R[x].insert(y);
      it = R[x].end();
      it--;
      update(1, 1, 1, n, x, *it);
      if (!flag[1])
        printf("YES\n");
      else
        printf("NO\n");
    }
  }
  return 0;
}
