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
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2 2
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1 1
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2 2
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2 2
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2 2
2 2
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2 2
2 2
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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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
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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
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10 2
19 9
19 17
8 8
5 3
20 4
12 12
2 16
5 19
2 4
 2 2 20
2 4
2 4
1 3
4 2
3 3
2 4
3 3
1 3
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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
 10 10 10
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
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1 3
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2 6
1 5
1 5
2 4
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1 3
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2 4
2 6
1 3
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2 6
2 2
2 2
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 10 10 10
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8 8
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9 13
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13 17
 1 10 10
2 16
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2 18
2 12
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2 14
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1 1
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 10 10 10
7 19
14 8
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6 6
10 8
18 6
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8 10
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11 9
1 15
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2 12
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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
 1 10 10
1 11
2 8
1 13
2 2
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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
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1 1
4 6
1 3
1 3
1 1
3 1
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2 6
1 5
2 6
1 1
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4 6
1 5
1 1
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1 3
1 3
6 2
6 2
4 6
4 4
3 1
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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
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1 1
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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
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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
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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 MAXN = 200005;
template <typename T>
inline void read(T &AKNOI) {
  T x = 0, flag = 1;
  char ch = getchar();
  while (!isdigit(ch)) {
    if (ch == '-') flag = -1;
    ch = getchar();
  }
  while (isdigit(ch)) {
    x = x * 10 + ch - '0';
    ch = getchar();
  }
  AKNOI = flag * x;
}
int n, m, q;
set<int> ban[MAXN << 1], S1[MAXN], S2[MAXN];
int mn[MAXN << 2], mx[MAXN << 2], seg[MAXN << 2];
void Build(int rt, int b, int e) {
  mn[rt] = m + 1;
  mx[rt] = 0;
  if (b == e) return;
  int mid = (b + e) >> 1;
  Build((rt << 1), b, mid);
  Build((rt << 1) | 1, mid + 1, e);
}
void Update(int rt, int b, int e, int p) {
  if (b == e) {
    mn[rt] = (S1[p].empty() ? m + 1 : *S1[p].begin());
    mx[rt] = (S2[p].empty() ? 0 : *S2[p].rbegin());
    seg[rt] = (mn[rt] <= mx[rt]);
    return;
  }
  int mid = (b + e) >> 1;
  if (p <= mid)
    Update((rt << 1), b, mid, p);
  else
    Update((rt << 1) | 1, mid + 1, e, p);
  mn[rt] = min(mn[(rt << 1)], mn[(rt << 1) | 1]);
  mx[rt] = max(mx[(rt << 1)], mx[(rt << 1) | 1]);
  seg[rt] = seg[(rt << 1)] | seg[(rt << 1) | 1];
  seg[rt] |= (mn[(rt << 1)] <= mx[(rt << 1) | 1]);
}
void solve() {
  read(n);
  read(m);
  read(q);
  Build(1, 1, n);
  while (q--) {
    int x, y;
    read(x);
    read(y);
    int bx = (x + 1) / 2, by = (y + 1) / 2;
    if (ban[x].find(y) != ban[x].end()) {
      ban[x].erase(y);
      if (x & 1) {
        S1[bx].erase(by);
      } else {
        S2[bx].erase(by);
      }
    } else {
      ban[x].insert(y);
      if (x & 1) {
        S1[bx].insert(by);
      } else {
        S2[bx].insert(by);
      }
    }
    Update(1, 1, n, bx);
    puts(seg[1] ? "NO" : "YES");
  }
}
int main() {
  solve();
  return 0;
}
