3 3 20
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2 2
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5 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
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3 3
1 1
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1 1
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3 1
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3 1
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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
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4 2
4 2
6 2
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5 1
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2 2
4 2
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6 2
4 2
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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
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 1 1 100
2 2
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1 1
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12 8
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1 3
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2 6
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6 2
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 10 10 10
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 1 1 20
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3 17
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5 19
5 17
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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
1 15
2 10
1 11
2 2
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 10 10 10
9 17
9 13
8 10
12 2
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18 6
10 6
13 19
2 12
10 8
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2 6
5 9
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1 19
6 6
8 4
11 9
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4 6
10 2
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16 2
12 6
8 2
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3 15
6 6
7 17
4 16
11 9
2 6
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9 19
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2 2
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3 15
 1 2 1
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1 13
1 7
2 14
1 19
1 17
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1 11
2 6
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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;
const int INF = 2e9 + 1;
struct Node {
  int minl = INF, maxr = -INF, ok = 1;
};
vector<Node> t;
void mod(int v, int vl, int vr, int pos, int d, bool is_left) {
  if (vr - vl == 1) {
    if (is_left)
      t[v].minl = d;
    else
      t[v].maxr = d;
    t[v].ok = (t[v].minl > t[v].maxr);
    return;
  }
  int vm = (vl + vr) / 2;
  if (pos < vm)
    mod(2 * v + 1, vl, vm, pos, d, is_left);
  else
    mod(2 * v + 2, vm, vr, pos, d, is_left);
  t[v].maxr = max(t[2 * v + 1].maxr, t[2 * v + 2].maxr);
  t[v].minl = min(t[2 * v + 1].minl, t[2 * v + 2].minl);
  t[v].ok = (t[2 * v + 1].ok & t[2 * v + 2].ok &
             (t[2 * v + 1].minl > t[2 * v + 2].maxr));
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n, m, q;
  cin >> n >> m >> q;
  t.resize(4 * (n + 1));
  map<int, map<int, int>> ma;
  vector<set<int>> left(n + 1), right(n + 1);
  while (q--) {
    int x, y;
    cin >> x >> y;
    bool is_left = (x % 2 == 1);
    if (is_left) {
      if (ma[x][y])
        left[(x + 1) / 2].erase((y + 1) / 2);
      else
        left[(x + 1) / 2].insert((y + 1) / 2);
      ma[x][y] ^= 1;
    } else {
      if (ma[x][y])
        right[(x + 1) / 2].erase((y + 1) / 2);
      else
        right[(x + 1) / 2].insert((y + 1) / 2);
      ma[x][y] ^= 1;
    }
    if (is_left) {
      int pos = INF;
      if (left[(x + 1) / 2].size()) pos = *left[(x + 1) / 2].begin();
      mod(0, 0, n + 1, (x + 1) / 2, pos, 1);
    } else {
      int pos = -INF;
      if (right[(x + 1) / 2].size()) pos = *right[(x + 1) / 2].rbegin();
      mod(0, 0, n + 1, (x + 1) / 2, pos, 0);
    }
    cout << (t[0].ok ? "YES\n" : "NO\n");
  }
  return 0;
}
