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

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#include <bits/stdc++.h>
using namespace std;
const int N = 200005;
int n, m, Q, mn[N << 2], mx[N << 2], fl[N << 2];
set<int> SL[N], SR[N];
map<pair<int, int>, int> mp;
void pushup(int k) {
  mn[k] = max(mn[k * 2], mn[k * 2 + 1]);
  mx[k] = min(mx[k * 2], mx[k * 2 + 1]);
  fl[k] = fl[k * 2] | fl[k * 2 + 1] | (mn[k * 2 + 1] >= mx[k * 2]);
}
void build(int k, int l, int r) {
  if (l == r) {
    mn[k] = 0;
    mx[k] = m + 1;
    return;
  }
  int mid = (l + r) / 2;
  build(k * 2, l, mid);
  build(k * 2 + 1, mid + 1, r);
  pushup(k);
}
void change(int k, int l, int r, int p) {
  if (l == r) {
    mn[k] = (SL[l].size() ? *SL[l].rbegin() : 0);
    mx[k] = (SR[l].size() ? *SR[l].begin() : m + 1);
    fl[k] = (mn[k] >= mx[k]);
    return;
  }
  int mid = (l + r) / 2;
  if (p <= mid)
    change(k * 2, l, mid, p);
  else
    change(k * 2 + 1, mid + 1, r, p);
  pushup(k);
}
int main() {
  scanf("%d%d%d", &n, &m, &Q);
  build(1, 1, n);
  while (Q--) {
    int x, y;
    scanf("%d%d", &x, &y);
    x++, y++;
    if (mp[pair<int, int>(x, y)]) {
      if (y & 1)
        SL[x >> 1].erase(y >> 1);
      else
        SR[x >> 1].erase(y >> 1);
    } else {
      if (y & 1)
        SL[x >> 1].insert(y >> 1);
      else
        SR[x >> 1].insert(y >> 1);
    }
    mp[pair<int, int>(x, y)] ^= 1;
    change(1, 1, n, x >> 1);
    puts(fl[1] ? "NO" : "YES");
  }
  return 0;
}
