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
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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 10 10
1 15
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8 8
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2 4
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1 15
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2 14
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7 17
6 6
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2 6
1 1
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1 3
2 6
1 5
2 6
2 2
2 6
1 1
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1 5
1 1
2 6
1 5
2 4
1 3
2 6
1 5
2 6
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2 4
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1 3
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1 1
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6 6
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11 9
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8 2
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3 1
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1 11
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1 15
1 17
 10 10 10
15 19
12 8
7 13
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8 10
3 5
13 13
9 9
18 2
5 13
 2 3 20
1 3
1 1
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2 4
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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 3
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2 6
1 5
2 6
1 1
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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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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 long long N = 200000 + 10;
const long long MOD = 1000000007;
const long long LOG = 20;
const long long INF = 1000000010;
const long long delta = 11353;
struct node {
  long long mn, mx, ans;
};
node seg[N << 2];
set<long long> row[N * 2];
long long n, m, q, a[N * 2];
map<long long, long long> mp[N * 2];
node merge(node x, node y) {
  node res = x;
  res.ans = min(res.ans, y.ans);
  res.ans = min(res.ans, x.mn - y.mx);
  res.mn = min(res.mn, y.mn);
  res.mx = max(res.mx, y.mx);
  return res;
}
void build(long long id, long long l, long long r) {
  if (r - l == 1) {
    seg[id].mn = a[l * 2 - 1];
    seg[id].mx = a[l * 2];
    seg[id].ans = seg[id].mn - seg[id].mx;
    return;
  }
  long long md = (l + r) >> 1;
  build(id << 1, l, md);
  build(id << 1 | 1, md, r);
  seg[id] = merge(seg[id << 1], seg[id << 1 | 1]);
}
void Setmn(long long id, long long lq, long long rq, long long x, long long l,
           long long r) {
  if (rq <= l || r <= lq) return;
  if (lq <= l && r <= rq) {
    seg[id].mn = x;
    seg[id].ans = seg[id].mn - seg[id].mx;
    return;
  }
  long long md = (l + r) >> 1;
  Setmn(id << 1, lq, rq, x, l, md);
  Setmn(id << 1 | 1, lq, rq, x, md, r);
  seg[id] = merge(seg[id << 1], seg[id << 1 | 1]);
}
void Setmx(long long id, long long lq, long long rq, long long x, long long l,
           long long r) {
  if (rq <= l || r <= lq) return;
  if (lq <= l && r <= rq) {
    seg[id].mx = x;
    seg[id].ans = seg[id].mn - seg[id].mx;
    return;
  }
  long long md = (l + r) >> 1;
  Setmx(id << 1, lq, rq, x, l, md);
  Setmx(id << 1 | 1, lq, rq, x, md, r);
  seg[id] = merge(seg[id << 1], seg[id << 1 | 1]);
}
int32_t main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  cin >> n >> m >> q;
  for (long long i = 1; i <= 2 * n; i++) {
    if (i % 2 == 0)
      a[i] = -INF, row[i].insert(-INF);
    else
      row[i].insert(INF), a[i] = INF;
  }
  build(1, 1, n + 1);
  for (long long i = 1; i <= q; i++) {
    long long x, y;
    cin >> x >> y;
    if (x % 2 == 0) {
      if (mp[x][y] == 0) {
        mp[x][y] = 1;
        row[x].insert(y);
        if (a[x] < y) {
          a[x] = y;
          Setmx(1, (x / 2), (x / 2) + 1, y / 2, 1, n + 1);
        }
      } else {
        mp[x][y] = 0;
        row[x].erase(y);
        if (a[x] == y) {
          a[x] = *row[x].rbegin();
          Setmx(1, x / 2, x / 2 + 1, a[x] / 2, 1, n + 1);
        }
      }
    } else {
      if (mp[x][y] == 0) {
        mp[x][y] = 1;
        row[x].insert(y);
        if (a[x] > y) {
          a[x] = y;
          Setmn(1, (x + 1) / 2, (x + 1) / 2 + 1, (y + 1) / 2, 1, n + 1);
        }
      } else {
        mp[x][y] = 0;
        row[x].erase(y);
        if (a[x] == y) {
          a[x] = *row[x].begin();
          Setmn(1, (x + 1) / 2, (x + 1) / 2 + 1, (a[x] + 1) / 2, 1, n + 1);
        }
      }
    }
    cout << (seg[1].ans <= 0 ? "NO\n" : "YES\n");
  }
  return 0;
}
