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
2 2
2 2
2 2
1 1
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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
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1 1
1 1
1 1
2 2
1 1
1 1
2 2
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 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
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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
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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
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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
1 5
1 3
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2 4
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1 3
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9 13
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13 17
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2 16
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2 10
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2 18
2 12
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2 14
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1 3
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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 3
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1 3
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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
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6 6
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4 6
 10 10 10
7 19
14 8
15 13
6 6
10 8
18 6
3 1
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8 10
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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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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
1 13
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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
1 3
3 1
2 6
1 1
2 4
1 1
4 6
1 3
1 3
1 1
3 1
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2 6
1 5
2 6
1 1
1 1
4 6
1 5
1 1
1 1
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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
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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 = 1e6 + 10;
const int mod = 1e9 + 7;
int read() {
  int x = 0, f = 1;
  char c = getchar();
  while (c < '0' || c > '9') {
    if (c == '-') f = -1;
    c = getchar();
  }
  while (c >= '0' && c <= '9') x = (x << 1) + (x << 3) + c - '0', c = getchar();
  return x * f;
}
const int SEN = 2e5 + 10;
int n, m;
struct segmentTree {
  int u[SEN << 2], d[SEN << 2], p[SEN << 2];
  set<int> ri[SEN], le[SEN];
  void pushup(int pos) {
    u[pos] = max(u[pos << 1], u[pos << 1 | 1]);
    d[pos] = min(d[pos << 1], d[pos << 1 | 1]);
    p[pos] = p[pos << 1] | p[pos << 1 | 1] | (d[pos << 1] <= u[pos << 1 | 1]) |
             (d[pos << 1 | 1] <= u[pos << 1]);
  }
  void update(int x, int f, int w, int v, int pos, int l, int r) {
    if (l == r) {
      if (f == 1) {
        if (w)
          ri[l].insert(v);
        else
          ri[l].erase(v);
      } else {
        if (w)
          le[l].insert(v);
        else
          le[l].erase(v);
      }
      u[pos] = (ri[l].size() == 0 ? 0 : *ri[l].rbegin());
      d[pos] = (le[l].size() == 0 ? m + 1 : *le[l].begin());
      p[pos] = d[pos] <= u[pos];
      return;
    }
    int mid = (l + r) >> 1;
    if (x <= mid)
      update(x, f, w, v, pos << 1, l, mid);
    else
      update(x, f, w, v, pos << 1 | 1, mid + 1, r);
    pushup(pos);
  }
  void build(int pos, int l, int r) {
    u[pos] = 0;
    d[pos] = m + 1;
    if (l == r) {
      return;
    }
    int mid = (l + r) >> 1;
    build(pos << 1, l, mid);
    build(pos << 1 | 1, mid + 1, r);
  }
} T;
map<pair<int, int>, int> mp;
int main() {
  n = read(), m = read();
  T.build(1, 1, n);
  int q = read();
  for (int i = 1; i <= q; i++) {
    int x = read(), y = read();
    x++, y++;
    if (mp[make_pair(x, y)] == 0) {
      mp[make_pair(x, y)] = 1;
      if (x & 1)
        T.update(x / 2, 1, 1, y / 2, 1, 1, n);
      else
        T.update(x / 2, 0, 1, y / 2, 1, 1, n);
    } else {
      mp[make_pair(x, y)] = 0;
      if (x & 1)
        T.update(x / 2, 1, 0, y / 2, 1, 1, n);
      else
        T.update(x / 2, 0, 0, y / 2, 1, 1, n);
    }
    puts(T.p[1] ? "NO" : "YES");
  }
}
