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
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2 2
1 1
2 2
1 1
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2 2
2 2
1 1
1 1
2 2
1 1
2 2
2 2
1 1
2 2
1 1
1 1
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
1 1
2 2
2 2
1 1
1 1
1 1
2 2
1 1
2 2
1 1
2 2
1 1
1 1
1 1
2 2
1 1
1 1
2 2
1 1
1 1
2 2
1 1
2 2
1 1
1 1
1 1
2 2
2 2
1 1
1 1
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
1 1
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
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 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
1 1
2 6
1 5
1 5
2 4
2 4
1 3
1 5
2 4
2 6
1 3
1 1
1 3
2 6
2 2
2 2
1 1
2 2
2 6
1 5
1 3
2 6
2 4
2 2
2 2
2 6
1 3
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2 2
2 4
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2 4
2 6
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2 6
2 6
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1 3
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2 2
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1 3
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 2 2 2
1 3
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 10 10 10
17 11
11 15
8 8
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7 7
9 13
12 8
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15 13
13 17
 1 10 10
2 16
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1 19
2 10
2 4
2 18
2 12
2 6
2 14
2 2
 1 2 100
1 3
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2 4
1 3
2 4
1 1
2 2
1 1
2 4
2 2
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1 3
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1 3
2 4
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1 1
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1 1
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1 3
1 1
2 4
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1 1
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1 1
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1 3
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2 2
1 1
2 2
1 1
1 3
1 1
2 2
2 4
2 4
2 2
1 3
2 2
1 1
2 4
1 1
2 4
2 4
2 4
2 2
2 2
1 3
2 2
2 2
1 1
2 4
1 1
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1 1
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1 3
1 3
1 3
1 1
2 4
1 3
1 3
1 1
1 1
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2 4
1 3
1 1
2 4
2 2
 3 3 20
1 1
3 1
1 1
1 1
5 1
3 5
1 3
4 4
1 1
3 1
4 4
4 6
1 3
3 5
6 6
1 1
6 6
1 1
3 3
4 6
 10 10 10
7 19
14 8
15 13
6 6
10 8
18 6
3 1
16 4
8 10
12 12
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4 4
18 20
11 9
1 15
2 2
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2 12
17 9
11 13
8 2
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4 2
6 4
1 3
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6 4
2 2
2 4
1 3
4 4
3 1
 1 10 10
1 11
2 8
1 13
2 2
1 5
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
1 3
3 1
2 6
1 1
2 4
1 1
4 6
1 3
1 3
1 1
3 1
 3 3 20
2 6
1 5
2 6
1 1
1 1
4 6
1 5
1 1
1 1
5 1
1 3
1 3
6 2
6 2
4 6
4 4
3 1
4 4
1 1
1 3
 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
2 2
2 2
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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1 1
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2 2
 1 10 10
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 INF = 2000000000;
set<int> a[400005];
set<int> b[400005];
struct Interval {
  int flag, minn, maxx;
};
Interval arbint[1600005];
int n;
Interval create(int value1, int value2) {
  return Interval{
      ((value1 != 0 ? value1 : INF) > (value2 != 0 ? value2 : 0)),
      value1 != 0 ? value1 : INF,
      value2 != 0 ? value2 : 0,
  };
}
Interval join(const Interval &left, const Interval &right) {
  return Interval{
      (left.minn > right.maxx) & (left.flag == 1) & (right.flag == 1),
      min(left.minn, right.minn),
      max(left.maxx, right.maxx),
  };
}
void update(int nod, int st, int dr, int index) {
  if (st == dr) {
    if (a[st].size() == 0) {
      if (b[st].size() == 0)
        arbint[nod] = create(0, 0);
      else
        arbint[nod] = create(0, *(b[st].rbegin()));
    } else {
      if (b[st].size() == 0)
        arbint[nod] = create(*a[st].begin(), 0);
      else
        arbint[nod] = create(*a[st].begin(), *(b[st].rbegin()));
    }
  } else {
    int mij = (st + dr) / 2;
    if (index <= mij)
      update(2 * nod, st, mij, index);
    else
      update(2 * nod + 1, mij + 1, dr, index);
    arbint[nod] = join(arbint[2 * nod], arbint[2 * nod + 1]);
  }
}
void update(int index) { update(1, 1, n, index); }
Interval query(int nod, int st, int dr, int left, int right) {
  if (st == left && dr == right)
    return arbint[nod];
  else {
    int mij = (st + dr) / 2;
    if (right <= mij)
      return query(2 * nod, st, mij, left, right);
    else {
      if (mij < left)
        return query(2 * nod + 1, mij + 1, dr, left, right);
      else
        return join(query(2 * nod, st, mij, left, mij),
                    query(2 * nod + 1, mij + 1, dr, mij + 1, right));
    }
  }
}
Interval query(int left, int right) { return query(1, 1, n, left, right); }
int main() {
  int m, q, i, x, y;
  scanf("%d%d%d", &n, &m, &q);
  n *= 2;
  for (i = 1; i <= 4 * n; i++) {
    arbint[i].minn = INF;
    arbint[i].flag = 1;
  }
  for (i = 1; i <= q; i++) {
    scanf("%d%d", &x, &y);
    set<int>::iterator it;
    if (x % 2 == 1 && y % 2 == 1) {
      it = a[x].find(y);
      if (it != a[x].end()) {
        a[x].erase(it);
        update(x);
      } else {
        a[x].insert(y);
        update(x);
      }
    } else {
      it = b[x - 1].find(y);
      if (it != b[x - 1].end()) {
        b[x - 1].erase(it);
        update(x - 1);
      } else {
        b[x - 1].insert(y);
        update(x - 1);
      }
    }
    if (arbint[1].flag == 1)
      printf("YES\n");
    else
      printf("NO\n");
  }
  return 0;
}
