3 3 20
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5 5
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5 5
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 1 10 10
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2 12
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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
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6 4
5 3
6 4
 3 3 20
1 1
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4 6
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4 6
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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
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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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14 12
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8 6
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12 2
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 1 1 100
2 2
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1 1
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2 6
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1 19
3 17
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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
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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
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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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11 13
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3 15
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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 N = 2e5 + 5;
int tab[2 * N], tab2[2 * N];
bool czy[2 * N];
set<int> S1[N];
set<int> S2[N];
void quer1(int id, int val) {
  for (id += N, tab[id] = val, czy[id] = (tab[id] <= tab2[id]), id /= 2; id > 0;
       id /= 2) {
    czy[id] =
        (tab[2 * id + 1] <= tab2[2 * id]) && czy[2 * id] && czy[2 * id + 1];
    tab[id] = max(tab[2 * id], tab[2 * id + 1]);
  }
}
void quer2(int id, int val) {
  for (id += N, tab2[id] = val, czy[id] = (tab[id] <= tab2[id]), id /= 2;
       id > 0; id /= 2) {
    czy[id] =
        (tab[2 * id + 1] <= tab2[2 * id]) && czy[2 * id] && czy[2 * id + 1];
    tab2[id] = min(tab2[2 * id], tab2[2 * id + 1]);
  }
}
int main() {
  int n, m, q;
  cin >> n >> m >> q;
  for (int i = 0; i < 2 * N; i++) {
    czy[i] = 1;
    tab2[i] = 2 * m + 5;
  }
  while (q--) {
    int x, y;
    cin >> x >> y;
    if (!(x & 1)) {
      x--;
      x /= 2;
      if (S1[x].find(-y) == S1[x].end()) {
        S1[x].insert(-y);
        quer1(x, -*S1[x].begin());
      } else {
        S1[x].erase(S1[x].find(-y));
        quer1(x, (S1[x].size() == 0) ? 0 : -(*(S1[x].begin())));
      }
    } else {
      x--;
      x /= 2;
      if (S2[x].find(y) == S2[x].end()) {
        S2[x].insert(y);
        quer2(x, *S2[x].begin());
      } else {
        S2[x].erase(S2[x].find(y));
        quer2(x, (S2[x].size() == 0) ? 2 * m + 5 : *(S2[x].begin()));
      }
    }
    if (czy[1]) {
      cout << "YES\n";
    } else {
      cout << "NO\n";
    }
  }
}
