3 3 20
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2 2
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5 5
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 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
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 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
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6 6
6 6
6 2
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6 4
5 3
6 4
 3 3 20
1 1
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3 3
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3 1
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4 6
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 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
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7 15
20 18
3 19
11 17
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 3 1 20
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6 2
2 2
6 2
 10 10 10
10 12
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8 6
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 1 1 100
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 1 10 10
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1 3
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2 6
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 10 10 10
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5 19
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15 9
16 4
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 1 10 10
2 4
2 8
2 6
1 17
1 9
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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
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4 6
10 2
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16 2
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8 2
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3 15
6 6
7 17
4 16
11 9
2 6
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3 15
 1 2 1
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1 7
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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;
const int INF = 1e6 + 239;
struct Node {
  int ans;
  int min_0;
  int max_1;
  Node() {
    ans = 0;
    min_0 = INF;
    max_1 = -1;
  }
  Node(int p0, int p1) {
    min_0 = p0;
    max_1 = p1;
    ans = 0;
  }
  Node(int ans_, int min_0_, int max_1_) {
    ans = ans_;
    min_0 = min_0_;
    max_1 = max_1_;
  }
  friend Node conq(const Node &l, const Node &r) {
    return Node(l.ans | r.ans | (l.min_0 <= r.max_1), min(l.min_0, r.min_0),
                max(l.max_1, r.max_1));
  }
};
const int N = 4e5 + 8;
namespace SegmentTree {
Node t[4 * N];
void pull(int v) { t[v] = conq(t[2 * v + 1], t[2 * v + 2]); }
void set(int v, int l, int r, int pos, int v1, int v2) {
  if (l + 1 == r) {
    t[v] = Node(v1, v2);
  } else {
    int m = (r + l) >> 1;
    if (pos < m) {
      set(2 * v + 1, l, m, pos, v1, v2);
    } else {
      set(2 * v + 2, m, r, pos, v1, v2);
    }
    pull(v);
  }
}
void set(int pos, int v1, int v2) { set(0, 0, N, pos, v1, v2); }
int can() { return !t[0].ans; }
}  // namespace SegmentTree
set<int> s0[N];
set<int> s1[N];
void refresh(int i) { SegmentTree::set(i, *s0[i].begin(), *s1[i].rbegin()); }
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  int n, m, q;
  cin >> n >> m >> q;
  for (int i = 0; i < N; i++) {
    s0[i].insert(INF);
    s1[i].insert(-1);
  }
  while (q--) {
    int i, j;
    cin >> i >> j;
    i--;
    j--;
    if (!(i & 1)) {
      if (s0[i].count(j)) {
        s0[i].erase(j);
      } else {
        s0[i].insert(j);
      }
    } else {
      if (s1[i].count(j)) {
        s1[i].erase(j);
      } else {
        s1[i].insert(j);
      }
    }
    refresh(i);
    if (SegmentTree::can()) {
      cout << "YES\n";
    } else {
      cout << "NO\n";
    }
  }
}
