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

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#include <bits/stdc++.h>
int enlarge(int n) {
  int res = 1;
  while (res < n) {
    res <<= 1;
  }
  return res;
}
class segment_tree {
  int n;
  std::vector<int> a, b;
  std::vector<bool> s;
  void modify_a(int u, int l, int r, int x, int v) {
    if (l + 1 == r) {
      a[u] = v;
      s[u] = b[u] >= a[u];
      return;
    }
    int mid = (l + r + 1) >> 1;
    if (x < mid) {
      modify_a(u << 1, l, mid, x, v);
    } else {
      modify_a(u << 1 | 1, mid, r, x, v);
    }
    a[u] = std::max(a[u << 1], a[u << 1 | 1]);
    s[u] = s[u << 1] && s[u << 1 | 1] && b[u << 1] >= a[u << 1 | 1];
  }
  void modify_b(int u, int l, int r, int x, int v) {
    if (l + 1 == r) {
      b[u] = v;
      s[u] = b[u] >= a[u];
      return;
    }
    int mid = (l + r + 1) >> 1;
    if (x < mid) {
      modify_b(u << 1, l, mid, x, v);
    } else {
      modify_b(u << 1 | 1, mid, r, x, v);
    }
    b[u] = std::min(b[u << 1], b[u << 1 | 1]);
    s[u] = s[u << 1] && s[u << 1 | 1] && b[u << 1] >= a[u << 1 | 1];
  }

 public:
  segment_tree(int _n)
      : n(_n),
        a(enlarge(n) << 1),
        b(enlarge(n) << 1),
        s(enlarge(n) << 1, true) {}
  void modify_a(int x, int v) { modify_a(1, 0, n, x, v); }
  void modify_b(int x, int v) { modify_b(1, 0, n, x, v); }
  bool get_ans() { return s[1]; }
};
int main() {
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(0);
  int n, m, q;
  std::cin >> n >> m >> q;
  std::vector<std::set<int>> Sl(n), Sr(n);
  segment_tree T(n);
  for (int i = 0; i < n; ++i) {
    Sl[i].insert(0);
    Sr[i].insert(m);
    T.modify_b(i, m);
  }
  while (q--) {
    int x, y;
    std::cin >> x >> y;
    --x, --y;
    bool op = x & 1;
    x /= 2, y /= 2;
    y += op;
    if (op) {
      if (Sl[x].count(y)) {
        Sl[x].erase(y);
      } else {
        Sl[x].insert(y);
      }
      T.modify_a(x, *Sl[x].rbegin());
    } else {
      if (Sr[x].count(y)) {
        Sr[x].erase(y);
      } else {
        Sr[x].insert(y);
      }
      T.modify_b(x, *Sr[x].begin());
    }
    std::cout << (T.get_ans() ? "YES\n" : "NO\n");
  }
}
