3 3 20
4 4
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2 2
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2 2
2 2
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5 5
3 5
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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
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
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1 1
4 4
3 3
1 1
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1 1
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3 1
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6 4
3 1
6 6
4 6
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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
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 3 1 20
3 1
1 1
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4 2
4 2
6 2
1 1
5 1
5 1
2 2
4 2
2 2
6 2
4 2
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2 2
1 1
6 2
2 2
6 2
 10 10 10
10 12
19 7
14 12
10 10
8 6
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18 2
12 2
16 4
16 2
 1 1 100
2 2
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2 2
1 1
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 1 10 10
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12 8
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 2 3 20
1 3
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2 6
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 10 10 10
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1 19
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16 20
5 19
5 17
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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
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4 6
10 2
 10 10 10
16 2
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8 2
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3 15
6 6
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4 16
11 9
2 6
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11 13
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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 = 0x3f3f3f3f;
const long long INF = 0x3f3f3f3f3f3f3f3f;
const int N = 2e5;
int n, m;
map<pair<int, int>, bool> vis;
template <class cmp>
struct Heap {
  priority_queue<int, vector<int>, cmp> add, rem;
  void push(int first) { add.push(first); }
  void work() {
    while (int((rem).size()) && add.top() == rem.top()) add.pop(), rem.pop();
  }
  void erase(int first) { rem.push(first); }
  int top() {
    work();
    return add.top();
  }
  size_t size() { return int((add).size()) - int((rem).size()); }
};
struct cmp1 {
  bool operator()(int p, int q) { return p < q; }
};
struct cmp2 {
  bool operator()(int p, int q) { return p > q; }
};
Heap<cmp1> hx[N];
Heap<cmp2> hn[N];
const int T = N << 2;
int lose[T], mx[T], mn[T];
void pushup(int k) {
  mx[k] = max(mx[k << 1], mx[k << 1 | 1]);
  mn[k] = min(mn[k << 1], mn[k << 1 | 1]);
  lose[k] = lose[k << 1] | lose[k << 1 | 1] | (mx[k << 1 | 1] >= mn[k << 1]);
}
void build(int k, int l, int r) {
  if (l == r) {
    mx[k] = -1, mn[k] = m, lose[k] = 0;
    return;
  }
  int mid = (l + r) >> 1;
  build(k << 1, l, mid), build(k << 1 | 1, mid + 1, r);
  pushup(k);
}
void refresh(int first, int k, int l, int r) {
  if (l == r) {
    mx[k] = int((hx[l]).size()) ? hx[l].top() : -1;
    mn[k] = int((hn[l]).size()) ? hn[l].top() : m;
    lose[k] = (mx[k] >= mn[k]);
    return;
  }
  int mid = (l + r) >> 1;
  if (mid >= first)
    refresh(first, k << 1, l, mid);
  else
    refresh(first, k << 1 | 1, mid + 1, r);
  pushup(k);
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0), cout.tie(0);
  cin >> n >> m, build(1, 0, n - 1);
  int T;
  cin >> T;
  while (T--) {
    int first, second;
    cin >> first >> second, first--, second--;
    if (vis[make_pair(first, second)]) {
      if (first & 1)
        hx[first >> 1].erase(second >> 1);
      else
        hn[first >> 1].erase(second >> 1);
    } else {
      if (first & 1)
        hx[first >> 1].push(second >> 1);
      else
        hn[first >> 1].push(second >> 1);
    }
    vis[make_pair(first, second)] ^= 1;
    refresh(first >> 1, 1, 0, n - 1);
    cout << (lose[1] ? "NO" : "YES") << '\n';
  }
  return 0;
}
