3 3 20
4 4
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2 2
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5 5
2 2
2 2
2 2
5 5
5 5
3 5
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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
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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
1 1
1 1
2 2
2 2
2 2
1 1
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1 1
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1 1
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2 2
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2 2
2 2
2 2
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1 1
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2 2
1 1
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 1 10 10
1 15
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2 16
1 17
2 4
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2 8
1 11
2 10
2 6
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10 2
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19 17
8 8
5 3
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12 12
2 16
5 19
2 4
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2 4
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3 3
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3 3
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1 3
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2 2
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4 2
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1 1
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 1 10 10
1 19
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1 15
2 8
2 6
2 16
2 14
2 4
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8 4
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9 19
16 2
13 7
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7 17
6 6
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
1 3
2 6
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2 6
2 4
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2 6
2 4
1 3
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2 6
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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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2 6
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6 2
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 10 10 10
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2 14
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2 6
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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
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2 6
5 9
5 15
1 19
6 6
8 4
11 9
13 11
4 6
10 2
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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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3 15
 1 2 1
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1 7
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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;
inline int rd() {
  int x = 0;
  char c = getchar();
  bool f = 0;
  while (c < '0' && c != '-') c = getchar();
  if (c == '-') f = 1, c = getchar();
  while (c >= '0') x = (x << 3) + (x << 1) + (c ^ 48), c = getchar();
  return f ? -x : x;
}
const int SIZE = 2e5 + 100;
const int INF = 1e9;
int n, m, q;
int nxt[SIZE];
struct Node {
  int L, R;
  int mi, mx;
  bool OK;
} tree[SIZE << 2];
void Up(int p) {
  tree[p].OK = tree[(p << 1)].OK & tree[(p << 1 | 1)].OK;
  if (tree[(p << 1)].mi <= tree[(p << 1 | 1)].mx) tree[p].OK = 0;
  tree[p].mi = min(tree[(p << 1)].mi, tree[(p << 1 | 1)].mi);
  tree[p].mx = max(tree[(p << 1)].mx, tree[(p << 1 | 1)].mx);
}
void Build(int L, int R, int p) {
  tree[p].L = L, tree[p].R = R;
  tree[p].mi = INF, tree[p].mx = -INF;
  tree[p].OK = 1;
  if (L == R) return;
  int mid = (L + R) >> 1;
  Build(L, mid, (p << 1)), Build(mid + 1, R, (p << 1 | 1));
}
set<int> Mi[SIZE];
set<int, greater<int> > Mx[SIZE];
void Modify(int x, int p) {
  if (tree[p].L == tree[p].R) {
    tree[p].mi = INF, tree[p].mx = -INF;
    if (!Mi[x].empty()) tree[p].mi = *Mi[x].begin();
    if (!Mx[x].empty()) tree[p].mx = *Mx[x].begin();
    tree[p].OK = tree[p].mi > tree[p].mx;
    return;
  }
  int mid = (tree[p].L + tree[p].R) >> 1;
  if (x <= mid)
    Modify(x, (p << 1));
  else
    Modify(x, (p << 1 | 1));
  Up(p);
}
void _main() {
  n = rd(), m = rd(), q = rd();
  Build(1, n, 1);
  while (q--) {
    int X = rd(), Y = rd();
    int x = (X + 1) / 2, y = (Y + 1) / 2;
    if (X & 1) {
      if (Mi[x].count(y))
        Mi[x].erase(y);
      else
        Mi[x].insert(y);
    } else {
      if (Mx[x].count(y))
        Mx[x].erase(y);
      else
        Mx[x].insert(y);
    }
    Modify(x, 1);
    if (tree[1].OK)
      puts("YES");
    else
      puts("NO");
  }
}
int main() {
  _main();
  return 0;
}
