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

YES
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#include <bits/stdc++.h>
using namespace std;
const int st_size = 2000005, maxn = 200005;
int cur_state = 1, mn[st_size], mx[st_size], arr[2 * maxn], state[2 * maxn],
    ans[2 * maxn], ep, n, m, q;
pair<int, int> maxp[2 * maxn], minp[2 * maxn];
vector<pair<int, int> > point[st_size];
map<pair<int, int>, int> event;
void update_max(int i, int l, int r, int pos, int val) {
  if (l > pos or pos > r) return;
  if (l == r) {
    mx[i] = val;
  } else {
    int mid = (l + r) / 2;
    update_max(2 * i, l, mid, pos, val);
    update_max(2 * i + 1, mid + 1, r, pos, val);
    mx[i] = max(mx[2 * i], mx[2 * i + 1]);
  }
}
void update_min(int i, int l, int r, int pos, int val) {
  if (l > pos or pos > r) return;
  if (l == r) {
    mn[i] = val;
  } else {
    int mid = (l + r) / 2;
    update_min(2 * i, l, mid, pos, val);
    update_min(2 * i + 1, mid + 1, r, pos, val);
    mn[i] = min(mn[2 * i], mn[2 * i + 1]);
  }
}
int get_max(int i, int l, int r, int ll, int rr) {
  if (l > rr or ll > r) return INT_MIN;
  if (ll <= l and r <= rr) {
    return mx[i];
  } else {
    int mid = (l + r) / 2;
    return max(get_max(2 * i, l, mid, ll, rr),
               get_max(2 * i + 1, mid + 1, r, ll, rr));
  }
}
int get_min(int i, int l, int r, int ll, int rr) {
  if (l > rr or ll > r) return INT_MAX;
  if (ll <= l and r <= rr) {
    return mn[i];
  } else {
    int mid = (l + r) / 2;
    return min(get_min(2 * i, l, mid, ll, rr),
               get_min(2 * i + 1, mid + 1, r, ll, rr));
  }
}
void dfs(int i, int l, int r) {
  for (auto p : point[i]) {
    ep++;
    int x = p.first, y = p.second;
    state[ep] = cur_state;
    if (x & 1) {
      maxp[ep] = {-1, -1};
      minp[ep] = {x, arr[x]};
      arr[x] = min(arr[x], y);
      update_min(1, 1, 2 * n, x, arr[x]);
      if (get_max(1, 1, 2 * n, x + 1, 2 * n) > y) cur_state = 0;
    } else {
      maxp[ep] = {x, arr[x]};
      minp[ep] = {-1, -1};
      arr[x] = max(arr[x], y);
      update_max(1, 1, 2 * n, x, arr[x]);
      if (get_min(1, 1, 2 * n, 1, x - 1) < y) cur_state = 0;
    }
  }
  if (l == r) {
    ans[l] = cur_state;
  } else {
    int mid = (l + r) / 2;
    dfs(2 * i, l, mid);
    dfs(2 * i + 1, mid + 1, r);
  }
  for (auto p : point[i]) {
    cur_state = state[ep];
    if (maxp[ep].first != -1) {
      update_max(1, 1, 2 * n, maxp[ep].first, maxp[ep].second);
      arr[maxp[ep].first] = maxp[ep].second;
    }
    if (minp[ep].first != -1) {
      update_min(1, 1, 2 * n, minp[ep].first, minp[ep].second);
      arr[minp[ep].first] = minp[ep].second;
    }
    ep--;
  }
}
void add_query(int i, int l, int r, int ll, int rr, pair<int, int> p) {
  if (l > rr or ll > r) return;
  if (ll <= l and r <= rr)
    point[i].emplace_back(p);
  else {
    int mid = (l + r) / 2;
    add_query(2 * i, l, mid, ll, rr, p);
    add_query(2 * i + 1, mid + 1, r, ll, rr, p);
  }
}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  cin >> n >> m >> q;
  for (int i = 0; i < st_size; i++) {
    mx[i] = INT_MIN;
    mn[i] = INT_MAX;
  }
  for (int i = 0; i < 2 * maxn; i++) {
    arr[i] = (i & 1) ? INT_MAX : INT_MIN;
  }
  for (int i = 1; i <= q; i++) {
    int x, y;
    cin >> x >> y;
    if (!event.count({x, y}))
      event[{x, y}] = i;
    else {
      int j = event[{x, y}];
      event.erase({x, y});
      add_query(1, 1, q, j, i - 1, make_pair(x, y));
    }
  }
  for (auto lft : event) {
    int x = lft.first.first, y = lft.first.second, j = lft.second;
    add_query(1, 1, q, j, q, make_pair(x, y));
  }
  dfs(1, 1, q);
  for (int i = 1; i <= q; i++) cout << (ans[i] ? "YES" : "NO") << "\n";
}
