3 3 20
4 4
2 4
2 2
2 2
2 2
5 5
2 2
2 2
2 2
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5 5
3 5
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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
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1 1
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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
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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
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1 1
2 2
2 2
1 1
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2 2
2 2
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 1 10 10
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1 15
2 8
2 6
2 16
2 14
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8 4
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13 7
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7 17
6 6
1 1
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2 2
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2 2
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1 1
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1 1
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1 5
2 6
1 1
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1 3
2 6
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2 6
2 2
2 6
1 1
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1 1
2 6
1 5
2 4
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2 6
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2 6
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2 6
2 4
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2 6
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2 4
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2 6
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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 1
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1 1
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1 1
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4 6
1 3
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6 6
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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
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
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2 4
2 4
1 1
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1 1
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3 1
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1 1
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1 1
4 6
1 3
1 3
1 1
3 1
 3 3 20
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
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
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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;
std::mt19937 rnd(
    (int)std::chrono::steady_clock::now().time_since_epoch().count());
long long gcd(long long a, long long b) { return b == 0 ? a : gcd(b, a % b); }
const int MAXH = 200000;
const int MAXW = 200000;
const int MAXQ = 200000;
const int MAXS = 4 * MAXW;
int h, w, nq;
int qx[MAXQ], qy[MAXQ];
bool qans[MAXQ];
set<int> abyy[MAXW];
set<int> bbyy[MAXW];
int aval[MAXW], bval[MAXW];
int sval[MAXS][2];
int ssum[MAXS];
void spull(int x) {
  for (int kind = (0); kind < (2); ++kind)
    sval[x][kind] = max(sval[2 * x + 1][kind], sval[2 * x + 2][kind]);
  ssum[x] = max(max(ssum[2 * x + 1], ssum[2 * x + 2]),
                sval[2 * x + 1][1] + sval[2 * x + 2][0]);
}
void sinit(int x, int l, int r) {
  if (l == r) {
    sval[x][0] = sval[x][1] = ssum[x] = 0;
  } else {
    int m = l + (r - l) / 2;
    sinit(2 * x + 1, l, m);
    sinit(2 * x + 2, m + 1, r);
    spull(x);
  }
}
void smod(int x, int l, int r, int IDX, int KIND, int VAL) {
  if (l == r) {
    sval[x][KIND] = VAL;
    ssum[x] = sval[x][0] + sval[x][1];
  } else {
    int m = l + (r - l) / 2;
    if (IDX <= m)
      smod(2 * x + 1, l, m, IDX, KIND, VAL);
    else
      smod(2 * x + 2, m + 1, r, IDX, KIND, VAL);
    spull(x);
  }
}
void update(int y) {
  int wantaval = ((int)(abyy[y]).size()) == 0 ? 0 : *abyy[y].rbegin() + 1;
  if (wantaval != aval[y]) {
    aval[y] = wantaval;
    smod(0, 0, w - 1, y, 0, aval[y]);
  }
  int wantbval = ((int)(bbyy[y]).size()) == 0 ? 0 : h - *bbyy[y].begin();
  if (wantbval != bval[y]) {
    bval[y] = wantbval;
    smod(0, 0, w - 1, y, 1, bval[y]);
  }
}
void solve() {
  for (int y = (0); y < (w); ++y)
    abyy[y].clear(), bbyy[y].clear(), aval[y] = 0, bval[y] = 0;
  for (int i = (0); i < (nq); ++i) {
    int x = qx[i], y = qy[i];
    assert(x % 2 == y % 2);
    int col = x % 2;
    x /= 2;
    y /= 2;
    if (col == 1) {
      if (!abyy[y].count(x)) {
        abyy[y].insert(x);
        update(y);
      } else {
        abyy[y].erase(x);
        update(y);
      }
    } else {
      if (!bbyy[y].count(x)) {
        bbyy[y].insert(x);
        update(y);
      } else {
        bbyy[y].erase(x);
        update(y);
      }
    }
    qans[i] = ssum[0] <= h;
  }
}
void run() {
  scanf("%d%d%d", &h, &w, &nq);
  for (int i = (0); i < (nq); ++i)
    scanf("%d%d", &qx[i], &qy[i]), --qx[i], --qy[i];
  solve();
  for (int i = (0); i < (nq); ++i) printf("%s\n", qans[i] ? "YES" : "NO");
}
int main() {
  run();
  return 0;
}
