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
2 2
2 2
2 2
1 1
1 1
1 1
1 1
1 1
2 2
1 1
2 2
1 1
2 2
1 1
2 2
2 2
1 1
2 2
1 1
2 2
2 2
2 2
1 1
1 1
2 2
1 1
2 2
2 2
1 1
2 2
1 1
1 1
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
1 1
2 2
2 2
1 1
1 1
1 1
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1 1
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1 1
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1 1
1 1
1 1
2 2
1 1
1 1
2 2
1 1
1 1
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1 1
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1 1
1 1
1 1
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2 2
1 1
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2 2
1 1
2 2
2 2
2 2
1 1
2 2
2 2
2 2
2 2
2 2
1 1
1 1
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2 2
2 2
1 1
1 1
2 2
1 1
1 1
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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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
4 2
3 3
2 4
3 3
1 3
1 3
3 3
4 4
3 1
1 3
3 3
2 2
2 4
4 2
4 2
1 1
3 1
 1 10 10
1 19
1 17
2 2
2 10
1 15
2 8
2 6
2 16
2 14
2 4
 10 10 10
8 4
2 4
9 19
16 2
13 7
11 7
7 17
6 6
1 1
15 15
 2 1 2
2 2
1 1
 1 3 100
2 2
1 1
1 5
1 1
2 4
1 1
1 1
2 2
1 1
2 2
2 2
1 1
1 5
2 6
1 1
1 1
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
1 1
2 2
1 3
1 1
2 6
1 5
1 5
2 4
2 4
1 3
1 5
2 4
2 6
1 3
1 1
1 3
2 6
2 2
2 2
1 1
2 2
2 6
1 5
1 3
2 6
2 4
2 2
2 2
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1 3
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2 2
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1 3
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 10 10 10
17 11
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8 8
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7 7
9 13
12 8
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15 13
13 17
 1 10 10
2 16
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2 4
2 18
2 12
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2 14
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1 3
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1 1
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1 1
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2 4
2 4
1 1
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1 3
1 3
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1 1
2 2
1 1
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1 1
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2 4
2 4
2 2
1 3
2 2
1 1
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1 1
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2 4
2 4
2 2
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2 2
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1 1
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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 1
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1 3
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1 1
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4 6
1 3
3 5
6 6
1 1
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3 3
4 6
 10 10 10
7 19
14 8
15 13
6 6
10 8
18 6
3 1
16 4
8 10
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4 4
18 20
11 9
1 15
2 2
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2 12
17 9
11 13
8 2
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4 2
6 4
1 3
4 2
6 4
2 2
2 4
1 3
4 4
3 1
 1 10 10
1 11
2 8
1 13
2 2
1 5
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
1 3
2 4
2 4
1 1
2 6
1 1
1 3
3 1
2 6
1 1
2 4
1 1
4 6
1 3
1 3
1 1
3 1
 3 3 20
2 6
1 5
2 6
1 1
1 1
4 6
1 5
1 1
1 1
5 1
1 3
1 3
6 2
6 2
4 6
4 4
3 1
4 4
1 1
1 3
 10 10 10
10 6
7 5
9 13
13 15
19 7
11 13
5 17
16 6
2 14
7 15
 1 1 20
1 1
2 2
2 2
2 2
1 1
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1 1
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1 1
1 1
1 1
1 1
1 1
2 2
1 1
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1 1
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1 1
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2 2
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2 4
2 8
1 19
2 2
2 10
1 5
2 6
1 17
2 14
1 15
 3 3 20
4 2
3 5
3 1
2 2
3 1
5 5
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

YES
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#include <bits/stdc++.h>
const int INF = 1e9 + 17;
std::vector<int> minl, maxr;
std::vector<bool> flag;
std::vector<std::set<int>> left, right;
void pull(int v) {
  flag[v] = flag[2 * v] && flag[2 * v + 1] && minl[2 * v] > maxr[2 * v + 1];
  minl[v] = std::min(minl[2 * v], minl[2 * v + 1]);
  maxr[v] = std::max(maxr[2 * v], maxr[2 * v + 1]);
}
void update(int v, int lx, int rx, int x, int y, int type) {
  if (rx - lx == 1) {
    if (type == 0) {
      assert(x >= 0 && x < left.size());
      if (left[x].count(y)) {
        left[x].erase(y);
      } else {
        left[x].insert(y);
      }
    } else {
      assert(x >= 0 && x < right.size());
      if (right[x].count(y)) {
        right[x].erase(y);
      } else {
        right[x].insert(y);
      }
    }
    minl[v] = left[x].empty() ? INF : *left[x].begin();
    maxr[v] = right[x].empty() ? -INF : *std::prev(right[x].end());
    flag[v] = minl[v] > maxr[v];
  } else {
    int mx = (lx + rx) / 2;
    if (x < mx)
      update(2 * v, lx, mx, x, y, type);
    else
      update(2 * v + 1, mx, rx, x, y, type);
    pull(v);
  }
}
int main() {
  std::ios::sync_with_stdio(false);
  std::cin.tie(0);
  int n, m, q;
  std::cin >> n >> m >> q;
  minl.assign(4 * n, INF);
  maxr.assign(4 * n, -INF);
  flag.assign(4 * n, true);
  left.assign(n, {});
  right.assign(n, {});
  while (q--) {
    int i, j;
    std::cin >> i >> j;
    --i;
    --j;
    int type = i & 1;
    i /= 2;
    j /= 2;
    update(1, 0, n, i, j, type);
    std::cout << (flag[1] ? "YES" : "NO") << std::endl;
  }
  return 0;
}
