3 3 20
4 4
2 4
2 2
2 2
2 2
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2 2
2 2
2 2
5 5
5 5
3 5
4 2
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
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
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 10 10
1 15
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2 16
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7 17
6 6
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2 8
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12 8
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9 9
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5 13
 2 3 20
1 3
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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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2 6
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6 2
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 10 10 10
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 1 1 20
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4 2
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6 2
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1 5
2 6
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2 6
3 3
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1 5
 10 10 10
1 19
3 17
12 4
16 20
5 19
5 17
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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
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20 18
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2 2
11 13
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3 15
 1 2 1
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1 7
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1 11
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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 = 200009;
const int inf = 1e9;
struct SegmentTree {
  int l, r;
  int a, b;
  int flag;
} tree[maxn << 2];
void pushup(int now) {
  tree[now].a = min(tree[now << 1].a, tree[now << 1 | 1].a);
  tree[now].b = max(tree[now << 1].b, tree[now << 1 | 1].b);
  tree[now].flag = tree[now << 1].flag | tree[now << 1 | 1].flag |
                   (tree[now << 1].a <= tree[now << 1 | 1].b);
}
void build(int now, int l, int r) {
  tree[now].l = l;
  tree[now].r = r;
  tree[now].flag = 0;
  tree[now].a = inf;
  tree[now].b = -inf;
  tree[now].flag = 0;
  if (l == r) return;
  int mid = (l + r) >> 1;
  build(now << 1, l, mid);
  build(now << 1 | 1, mid + 1, r);
}
void update(int now, int p, int a, int b) {
  if (tree[now].l == tree[now].r) {
    tree[now].a = a;
    tree[now].b = b;
    tree[now].flag = (a <= b);
    return;
  }
  int mid = (tree[now].l + tree[now].r) >> 1;
  if (p <= mid)
    update(now << 1, p, a, b);
  else
    update(now << 1 | 1, p, a, b);
  pushup(now);
}
set<int> SL[maxn];
set<int> SR[maxn];
set<pair<int, int>> ban;
int main() {
  int n, m, T;
  scanf("%d%d%d", &n, &m, &T);
  build(1, 1, n);
  while (T--) {
    int x, y;
    scanf("%d%d", &x, &y);
    int r = (x + 1) / 2;
    int c = (y + 1) / 2;
    pair<int, int> now(x, y);
    if (ban.count(now)) {
      ban.erase(now);
      if (x & 1) {
        SL[r].erase(c);
      } else {
        SR[r].erase(c);
      }
    } else {
      ban.insert(now);
      if (x & 1) {
        SL[r].insert(c);
      } else {
        SR[r].insert(c);
      }
    }
    int a, b;
    auto it = SL[r].begin();
    if (it != SL[r].end())
      a = *it;
    else
      a = inf;
    it = SR[r].end();
    if (it != SR[r].begin())
      b = *(--it);
    else
      b = -inf;
    update(1, r, a, b);
    if (tree[1].flag)
      printf("NO\n");
    else
      printf("YES\n");
  }
  return 0;
}
