3 3 20
4 4
2 4
2 2
2 2
2 2
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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
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 3 1 20
3 1
1 1
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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
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2 2
2 2
1 1
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1 1
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 1 10 10
1 15
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2 16
1 17
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2 2
2 8
1 11
2 10
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 10 10 10
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8 8
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12 12
2 16
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2 4
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8 4
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7 17
6 6
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 2 1 2
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2 6
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2 6
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2 6
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 10 10 10
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1 1
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 10 10 10
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12 8
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9 9
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 2 3 20
1 3
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1 1
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1 1
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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 1 20
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 3 3 20
4 2
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1 5
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3 1
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2 6
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 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
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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
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
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1 11
2 6
 1 10 10
1 13
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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 maxn = 2e5 + 10;
set<int> stl[maxn], str[maxn];
map<pair<int, int>, int> mp;
int n, m, q;
namespace Segtree {
int mx[maxn << 2], mi[maxn << 2], eleg[maxn << 2];
void pushup(int o) {
  int lch = o * 2, rch = o * 2 + 1;
  mx[o] = max(mx[lch], mx[rch]);
  mi[o] = min(mi[lch], mi[rch]);
  eleg[o] = (eleg[lch] | eleg[rch]);
  eleg[o] |= (mx[rch] >= mi[lch]);
  return;
}
void build(int o, int L, int R) {
  int lch = o * 2, rch = o * 2 + 1;
  if (L == R) {
    mx[o] = 0;
    mi[o] = m + 1;
    eleg[o] = 0;
    return;
  }
  int mid = (L + R) / 2;
  build(lch, L, mid);
  build(rch, mid + 1, R);
  pushup(o);
}
void update(int o, int L, int R, int pos) {
  int lch = o * 2, rch = o * 2 + 1;
  if (L == R) {
    if (str[L].empty())
      mx[o] = 0;
    else
      mx[o] = *str[L].rbegin();
    if (stl[L].empty())
      mi[o] = m + 1;
    else
      mi[o] = *stl[L].begin();
    eleg[o] = (mx[o] >= mi[o] ? 1 : 0);
    return;
  }
  int mid = (L + R) / 2;
  if (pos <= mid)
    update(lch, L, mid, pos);
  else
    update(rch, mid + 1, R, pos);
  pushup(o);
  return;
}
};  // namespace Segtree
using namespace Segtree;
int main() {
  scanf("%d%d%d", &n, &m, &q);
  build(1, 1, n);
  while (q--) {
    int x, y;
    scanf("%d%d", &x, &y);
    ++x;
    x /= 2;
    ++y;
    if (y & 1) {
      if (str[x].count(y / 2))
        str[x].erase(y / 2);
      else
        str[x].insert(y / 2);
    } else {
      if (stl[x].count(y / 2))
        stl[x].erase(y / 2);
      else
        stl[x].insert(y / 2);
    }
    update(1, 1, n, x);
    printf("%s\n", eleg[1] ? "NO" : "YES");
  }
  return 0;
}
