3 3 20
4 4
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2 2
2 2
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5 5
3 5
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5 5
3 5
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2 2
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 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
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3 1
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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
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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
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1 15
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7 17
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1 1
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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 3
2 6
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2 6
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6 6
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12 8
7 13
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3 5
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9 9
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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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3 1
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1 1
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1 3
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1 1
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2 6
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1 1
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1 1
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1 3
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6 2
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4 6
4 4
3 1
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1 1
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 10 10 10
10 6
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9 13
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19 7
11 13
5 17
16 6
2 14
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1 19
2 2
2 10
1 5
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1 17
2 14
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1 19
3 17
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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
6 10
20 18
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2 2
11 13
17 13
3 15
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2 4
1 13
1 7
2 14
1 19
1 17
2 2
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1 11
2 6
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1 13
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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;
template <typename T>
inline void ckmax(T& x, T y) {
  x = (y > x ? y : x);
}
template <typename T>
inline void ckmin(T& x, T y) {
  x = (y < x ? y : x);
}
const int MAXN = 2e5;
int n, m, q, inf;
map<pair<int, int>, bool> mp;
set<int> s0[MAXN + 5], s1[MAXN + 5];
struct SegmentTree {
  int mn[MAXN * 4 + 5], mx[MAXN * 4 + 5];
  bool ans[MAXN * 4 + 5];
  void push_up(int p) {
    ans[p] = (ans[p << 1] || ans[p << 1 | 1] || mn[p << 1] <= mx[p << 1 | 1]);
    mn[p] = min(mn[p << 1], mn[p << 1 | 1]);
    mx[p] = max(mx[p << 1], mx[p << 1 | 1]);
  }
  void build(int p, int l, int r) {
    if (l == r) {
      mx[p] = 0;
      mn[p] = inf;
      return;
    }
    int mid = (l + r) >> 1;
    build(p << 1, l, mid);
    build(p << 1 | 1, mid + 1, r);
    push_up(p);
  }
  void modify_min(int p, int l, int r, int pos, int v) {
    if (l == r) {
      mn[p] = v;
      ans[p] = (mn[p] <= mx[p]);
      return;
    }
    int mid = (l + r) >> 1;
    if (pos <= mid)
      modify_min(p << 1, l, mid, pos, v);
    else
      modify_min(p << 1 | 1, mid + 1, r, pos, v);
    push_up(p);
  }
  void modify_max(int p, int l, int r, int pos, int v) {
    if (l == r) {
      mx[p] = v;
      ans[p] = (mn[p] <= mx[p]);
      return;
    }
    int mid = (l + r) >> 1;
    if (pos <= mid)
      modify_max(p << 1, l, mid, pos, v);
    else
      modify_max(p << 1 | 1, mid + 1, r, pos, v);
    push_up(p);
  }
  SegmentTree() {}
} T;
int main() {
  cin >> n >> m >> q;
  inf = n * 2 + 1;
  T.build(1, 1, m);
  for (int tq = 1; tq <= q; ++tq) {
    int x, y;
    cin >> x >> y;
    bool flag = x % 2;
    if (mp[make_pair(x, y)]) {
      mp[make_pair(x, y)] = 0;
      x = (x + 1) / 2;
      y = (y + 1) / 2;
      if (flag == 1) {
        s1[y].erase(x);
        int v = (s1[y].empty() ? inf : *s1[y].begin());
        T.modify_min(1, 1, m, y, v);
      } else {
        s0[y].erase(x);
        int v = (s0[y].empty() ? 0 : *s0[y].rbegin());
        T.modify_max(1, 1, m, y, v);
      }
    } else {
      mp[make_pair(x, y)] = 1;
      x = (x + 1) / 2;
      y = (y + 1) / 2;
      if (flag == 1) {
        s1[y].insert(x);
        T.modify_min(1, 1, m, y, *s1[y].begin());
      } else {
        s0[y].insert(x);
        T.modify_max(1, 1, m, y, *s0[y].rbegin());
      }
    }
    if (T.ans[1])
      cout << "NO" << endl;
    else
      cout << "YES" << endl;
  }
  return 0;
}
