3 3 20
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2 2
2 2
2 2
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5 5
3 5
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2 2
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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
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1 1
2 2
2 2
1 1
1 1
1 1
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2 2
2 2
1 1
1 1
1 1
1 1
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1 1
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1 1
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1 1
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1 1
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 1 10 10
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7 17
6 6
1 1
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2 6
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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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19 7
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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
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
13 11
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
6 10
20 18
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2 2
11 13
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3 15
 1 2 1
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2 4
1 13
1 7
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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;
struct node {
  int mix;
  int miy;
  int sum;
};
const int maxi = 1e6 + 10;
const int sz = 1 << 18;
set<int> st[maxi];
node tree[2 * sz];
int n, m, q;
int x, y;
node merge(node x, node y) {
  node ans;
  ans.mix = min(x.mix, y.mix);
  ans.miy = min(x.miy, y.miy);
  ans.sum = min(x.sum, y.sum);
  ans.sum = min(ans.sum, x.mix + y.miy);
  return ans;
}
void build() {
  for (int i = sz; i < 2 * sz; i++) tree[i] = {m, m, 2 * m};
  for (int i = sz - 1; i > 0; i--)
    tree[i] = merge(tree[2 * i], tree[2 * i + 1]);
}
void update(int x) {
  node nd = tree[sz + (x - 1) / 2];
  int mi = m;
  int ma = m;
  if (x & 1) {
    if (st[x].size()) mi = (*st[x].begin()) / 2;
    if (st[x + 1].size()) ma = m - (*st[x + 1].rbegin()) / 2;
  } else {
    if (st[x].size()) ma = m - (*st[x].rbegin()) / 2;
    if (st[x - 1].size()) mi = (*st[x - 1].begin()) / 2;
  }
  nd = {mi, ma, mi + ma};
  int idx = (x - 1) / 2 + sz;
  tree[idx] = nd;
  idx /= 2;
  while (idx) {
    tree[idx] = merge(tree[2 * idx], tree[2 * idx + 1]);
    idx /= 2;
  }
}
int main() {
  cin >> n >> m >> q;
  build();
  while (q--) {
    int x, y;
    scanf("%d%d", &x, &y);
    if (st[x].find(y) == st[x].end()) {
      st[x].insert(y);
    } else
      st[x].erase(y);
    update(x);
    if (tree[1].sum < m)
      printf("NO\n");
    else
      printf("YES\n");
  }
}
