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

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#include <bits/stdc++.h>
using namespace std;
using namespace std;
const int maxn = 200000 + 10;
const int inf = 1000000000;
pair<int, int> p[maxn];
int n, m, q;
struct node {
  int mina, maxb, f;
  node() { mina = inf, maxb = 0, f = 0; }
};
inline node merge(const node& a, const node& b) {
  node c = node();
  c.mina = min(a.mina, b.mina);
  c.maxb = max(a.maxb, b.maxb);
  c.f = a.f + b.f;
  c.f = min(c.f, 1);
  if (a.mina <= b.maxb) c.f = 1;
  return c;
}
struct segtree {
  node a[maxn << 3];
  int n, ql, qr, v, k;
  void init(int N) {
    n = N;
    build(1, n, 1);
  }
  void maintain(int l, int r, int o) {
    if (l != r) {
      a[o] = merge(a[o << 1], a[o << 1 | 1]);
    }
  }
  void build(int l, int r, int o) {
    if (l == r) {
      a[o] = node();
      return;
    }
    int mid = l + r >> 1;
    build(l, mid, o << 1), build(mid + 1, r, o << 1 | 1);
    maintain(l, r, o);
  }
  void update(int l, int r, int o) {
    if (l == r) {
      node& e = a[o];
      if (k == 0) {
        if (v == 0)
          e.maxb = v;
        else {
          e.maxb = max(e.maxb, v);
        }
      } else {
        if (v == inf)
          e.mina = v;
        else {
          e.mina = min(e.mina, v);
        }
      }
      if (e.mina <= e.maxb)
        e.f = 1;
      else
        e.f = 0;
      assert(e.mina != e.maxb);
      return;
    }
    int mid = l + r >> 1;
    if (ql <= mid) update(l, mid, o << 1);
    if (qr > mid) update(mid + 1, r, o << 1 | 1);
    maintain(l, r, o);
  }
  void Update(int pos, int vv, int kk) {
    k = kk, v = vv;
    ql = pos, qr = pos;
    update(1, n, 1);
  }
  int Query() { return a[1].f; }
};
segtree tree;
set<pair<int, int> > has;
inline void solve() {
  tree.init(n);
  for (auto i = (0); i < (q); ++i) {
    int r, c, v;
    tie(r, c) = p[i];
    if (has.count(p[i])) {
      if (r & 1)
        v = inf;
      else
        v = 0;
      has.erase(p[i]);
    } else {
      v = c;
      has.insert(p[i]);
    }
    tree.Update((r + 1) / 2, v, r & 1);
    if (tree.Query() == 1)
      puts("NO");
    else if (tree.Query() == 0)
      puts("YES");
    else
      assert(false);
  }
}
int main(void) {
  scanf("%d%d%d", &n, &m, &q);
  for (auto i = (0); i < (q); ++i) {
    scanf("%d%d", &p[i].first, &p[i].second);
  }
  solve();
  return 0;
}
