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
2 2
1 1
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1 1
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2 2
1 1
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1 1
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1 1
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2 2
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 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
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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
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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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1 3
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2 2
2 4
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
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9 19
16 2
13 7
11 7
7 17
6 6
1 1
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2 2
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2 2
1 1
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1 1
2 4
1 1
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2 2
1 1
2 2
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1 1
1 5
2 6
1 1
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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
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1 3
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2 6
1 5
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2 4
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2 4
2 6
1 3
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2 6
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8 8
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2 18
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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 1
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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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4 6
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6 6
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 10 10 10
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6 6
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18 6
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11 9
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8 2
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3 1
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1 11
2 8
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1 9
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1 15
1 17
 10 10 10
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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
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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 1
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1 3
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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
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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
7 5
9 13
13 15
19 7
11 13
5 17
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2 14
7 15
 1 1 20
1 1
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2 4
2 8
1 19
2 2
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1 5
2 6
1 17
2 14
1 15
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4 2
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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
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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 INF = INT_MAX / 4;
template <class T>
void _R(T &x) {
  cin >> x;
}
void _R(int32_t &x) { scanf("%d", &x); }
void _R(long long &x) { scanf("%lld", &x); }
void _R(unsigned long long &x) { scanf("%llu", &x); }
void _R(double &x) { scanf("%lf", &x); }
void _R(char &x) { scanf(" %c", &x); }
void _R(char *x) { scanf("%s", x); }
void R() {}
template <class T, class... U>
void R(T &head, U &...tail) {
  _R(head);
  R(tail...);
}
template <class T>
void _W(const T &x) {
  cout << x;
}
void _W(const int32_t &x) { printf("%d", x); }
void _W(const long long &x) { printf("%lld", x); }
void _W(const double &x) { printf("%.16f", x); }
void _W(const char &x) { putchar(x); }
void _W(const char *x) { printf("%s", x); }
template <class T, class U>
void _W(const pair<T, U> &x) {
  _W(x.F);
  putchar(' ');
  _W(x.S);
}
template <class T>
void _W(const vector<T> &x) {
  for (auto i = x.begin(); i != x.end(); _W(*i++))
    if (i != x.cbegin()) putchar(' ');
}
void W() {}
template <class T, class... U>
void W(const T &head, const U &...tail) {
  _W(head);
  putchar(sizeof...(tail) ? ' ' : '\n');
  W(tail...);
}
const int dx[] = {0, 0, -1, 1}, dy[] = {-1, 1, 0, 0};
const int maxn = 2e5 + 5;
const int mo_num = 1e9 + 7;
int n, m, t, a[maxn], b[maxn], ans;
int Max[maxn << 3], Min[maxn << 3], flag[maxn << 3];
set<int> have[maxn][2];
void pushup(int rt) {
  Min[rt] = min(Min[rt << 1], Min[rt << 1 | 1]);
  Max[rt] = max(Max[rt << 1 | 1], Max[rt << 1]);
  flag[rt] =
      flag[rt << 1] | flag[rt << 1 | 1] | (Max[rt << 1 | 1] >= Min[rt << 1]);
}
void build(int rt, int l, int r) {
  if (l == r) {
    Min[rt] = INF;
    return;
  }
  int M = (l + r) >> 1;
  ;
  build(rt << 1, l, M), build(rt << 1 | 1, M + 1, r);
  pushup(rt);
}
void update(int rt, int l, int r, int pos, int val, int kind) {
  if (l == r) {
    set<int> &tmp = have[l][kind];
    if (tmp.count(val))
      tmp.erase(val);
    else
      tmp.insert(val);
    Min[rt] = have[l][1].empty() ? INF : *have[l][1].begin();
    Max[rt] = have[l][0].empty() ? 0 : *prev(have[l][0].end());
    flag[rt] = Max[rt] >= Min[rt];
    return;
  }
  int M = (l + r) >> 1;
  ;
  if (M >= pos)
    update(rt << 1, l, M, pos, val, kind);
  else
    update(rt << 1 | 1, M + 1, r, pos, val, kind);
  pushup(rt);
}
void solve() {
  int q;
  cin >> n >> m >> q;
  build(1, 1, m);
  for (int i = 1; i <= q; i++) {
    int x, y;
    cin >> x >> y;
    int val = x % 2;
    x = x + 1 >> 1;
    y = y + 1 >> 1;
    update(1, 1, m, y, x, val);
    cout << (flag[1] ^ 1 ? "YES" : "NO") << '\n';
  }
  return;
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int T = 1;
  while (T--) solve();
  return 0;
}
