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
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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
2 2
1 1
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2 2
2 2
1 1
1 1
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1 1
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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
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1 1
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1 1
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1 1
1 1
1 1
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1 1
1 1
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1 1
1 1
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1 1
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1 1
1 1
1 1
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2 2
1 1
1 1
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1 1
2 2
2 2
2 2
1 1
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2 2
2 2
2 2
2 2
1 1
1 1
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2 2
1 1
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2 2
1 1
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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
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10 2
19 9
19 17
8 8
5 3
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12 12
2 16
5 19
2 4
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2 4
2 4
1 3
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3 3
2 4
3 3
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3 1
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 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
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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
1 1
1 3
2 6
2 2
2 2
1 1
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2 6
1 5
1 3
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2 4
2 2
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1 3
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2 2
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1 3
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8 8
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7 7
9 13
12 8
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13 17
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2 16
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2 10
2 4
2 18
2 12
2 6
2 14
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1 3
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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 3
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 1
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1 1
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1 1
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2 4
2 4
2 2
1 3
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1 1
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1 1
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2 4
2 4
2 2
2 2
1 3
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 3
1 3
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1 1
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1 3
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1 1
1 1
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1 3
1 1
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2 2
 3 3 20
1 1
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1 1
1 1
5 1
3 5
1 3
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1 1
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4 6
1 3
3 5
6 6
1 1
6 6
1 1
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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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4 2
6 4
1 3
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6 4
2 2
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1 3
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3 1
 1 10 10
1 11
2 8
1 13
2 2
1 5
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
 3 3 20
2 6
1 5
2 6
1 1
1 1
4 6
1 5
1 1
1 1
5 1
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
2 2
1 1
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1 1
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1 1
1 1
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1 1
2 2
1 1
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1 1
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1 1
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2 2
 1 10 10
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;
vector<int> tree1, tree2, treeflag;
void update1(int v, int l, int r, int ind, int val) {
  if (l == r) {
    tree1[v] = val;
    return;
  }
  if (ind <= (r + l) / 2) {
    update1(v * 2, l, (r + l) / 2, ind, val);
  } else {
    update1(v * 2 + 1, (r + l) / 2 + 1, r, ind, val);
  }
  tree1[v] = min(tree1[v * 2], tree1[v * 2 + 1]);
  treeflag[v] = false;
  if (treeflag[v * 2] || treeflag[v * 2 + 1] ||
      tree1[v * 2] < tree2[v * 2 + 1]) {
    treeflag[v] = true;
  }
}
void update2(int v, int l, int r, int ind, int val) {
  if (l == r) {
    tree2[v] = val;
    return;
  }
  if (ind <= (r + l) / 2) {
    update2(v * 2, l, (r + l) / 2, ind, val);
  } else {
    update2(v * 2 + 1, (r + l) / 2 + 1, r, ind, val);
  }
  tree2[v] = max(tree2[v * 2], tree2[v * 2 + 1]);
  treeflag[v] = false;
  if (treeflag[v * 2] || treeflag[v * 2 + 1] ||
      tree1[v * 2] < tree2[v * 2 + 1]) {
    treeflag[v] = true;
  }
}
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  int n, m, q;
  cin >> n >> m >> q;
  tree1.resize(8 * n, 1e9);
  tree2.resize(8 * n, 0);
  treeflag.resize(8 * n, 0);
  set<pair<int, int> > st;
  vector<set<int> > sets(n * 2);
  int c1 = 0;
  while (q--) {
    int x, y;
    cin >> x >> y;
    x--;
    if (st.find({x, y}) != st.end()) {
      if (x % 2 == 0) {
        if (st.find({x + 1, y + 1}) != st.end()) {
          c1--;
          sets[x + 1].insert(y + 1);
          update2(1, 0, 2 * n - 1, x + 1, *sets[x + 1].rbegin());
        } else {
          sets[x].erase(y);
          if (sets[x].size() == 0) {
            update1(1, 0, 2 * n - 1, x, 1e9);
          } else {
            update1(1, 0, 2 * n - 1, x, *sets[x].begin());
          }
        }
      } else {
        if (st.find({x - 1, y - 1}) != st.end()) {
          c1--;
          sets[x - 1].insert(y - 1);
          update1(1, 0, 2 * n - 1, x - 1, *sets[x - 1].begin());
        } else {
          sets[x].erase(y);
          if (sets[x].size() == 0) {
            update2(1, 0, 2 * n - 1, x, 0);
          } else {
            update2(1, 0, 2 * n - 1, x, *sets[x].rbegin());
          }
        }
      }
      st.erase({x, y});
    } else {
      if (x % 2 == 0) {
        if (st.find({x + 1, y + 1}) != st.end()) {
          c1++;
          sets[x + 1].erase(y + 1);
          if (sets[x + 1].size() == 0) {
            update2(1, 0, 2 * n - 1, x + 1, 0);
          } else {
            update2(1, 0, 2 * n - 1, x + 1, *sets[x + 1].rbegin());
          }
        } else {
          sets[x].insert(y);
          update1(1, 0, 2 * n - 1, x, *sets[x].begin());
        }
      } else {
        if (st.find({x - 1, y - 1}) != st.end()) {
          c1++;
          sets[x - 1].erase(y - 1);
          if (sets[x - 1].size() == 0) {
            update1(1, 0, 2 * n - 1, x - 1, 1e9);
          } else {
            update1(1, 0, 2 * n - 1, x - 1, *sets[x - 1].begin());
          }
        } else {
          sets[x].insert(y);
          update2(1, 0, 2 * n - 1, x, *sets[x].rbegin());
        }
      }
      st.insert({x, y});
    }
    if (treeflag[1] || c1 != 0) {
      cout << "NO\n";
    } else {
      cout << "YES\n";
    }
  }
  return 0;
}
