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
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1 1
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2 2
1 1
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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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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
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2 2
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
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2 10
2 6
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10 2
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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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1 3
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3 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
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
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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
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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2 2
1 3
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2 6
1 5
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2 4
2 4
1 3
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2 4
2 6
1 3
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2 6
2 2
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2 4
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2 2
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2 6
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 10 10 10
17 11
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8 8
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7 7
9 13
12 8
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13 17
 1 10 10
2 16
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2 10
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2 18
2 12
2 6
2 14
2 2
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1 3
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1 1
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1 3
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1 3
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1 1
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1 3
1 1
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2 2
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2 2
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1 1
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2 4
1 1
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1 3
1 1
2 4
2 4
1 1
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2 4
2 4
1 1
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1 3
1 3
2 2
1 1
2 2
1 1
1 3
1 1
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2 4
2 4
2 2
1 3
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1 1
2 4
1 1
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2 4
2 4
2 2
2 2
1 3
2 2
2 2
1 1
2 4
1 1
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2 2
1 1
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1 3
1 3
1 3
1 1
2 4
1 3
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1 1
1 1
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1 3
1 1
2 4
2 2
 3 3 20
1 1
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1 1
1 1
5 1
3 5
1 3
4 4
1 1
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4 6
1 3
3 5
6 6
1 1
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1 1
3 3
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
12 12
 10 10 10
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
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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
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
2 2
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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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>
#pragma GCC optimize("Ofast", "unroll-loops", "omit-frame-pointer", "inline")
#pragma GCC option("arch=native", "tune=native", "no-zero-upper")
#pragma GCC target("avx2")
using namespace std;
template <typename T>
void maxtt(T &t1, T t2) {
  t1 = max(t1, t2);
}
template <typename T>
void mintt(T &t1, T t2) {
  t1 = min(t1, t2);
}
bool debug = 0;
int n, m, k;
int dx[4] = {0, 1, 0, -1}, dy[4] = {1, 0, -1, 0};
string direc = "RDLU";
const long long MOD2 = (long long)1000000007 * (long long)1000000007;
long long ln, lk, lm;
void etp(bool f = 0) {
  puts(f ? "YES" : "NO");
  exit(0);
}
void addmod(int &x, int y, int mod = 1000000007) {
  x += y;
  if (x >= mod) x -= mod;
  if (x < 0) x += mod;
  assert(x >= 0 && x < mod);
}
void et(int x = -1) {
  printf("%d\n", x);
  exit(0);
}
long long fastPow(long long x, long long y, int mod = 1000000007) {
  long long ans = 1;
  while (y > 0) {
    if (y & 1) ans = (x * ans) % mod;
    x = x * x % mod;
    y >>= 1;
  }
  return ans;
}
long long gcd1(long long x, long long y) { return y ? gcd1(y, x % y) : x; }
set<int> A[(200135)], B[(200135)];
int invalid;
map<pair<int, int>, int> mp;
struct nd {
  int mi = (1 << 30), mx = -(1 << 30);
  int ok = 1;
  nd() {}
  friend nd operator+(const nd &x, const nd &y) {
    nd res;
    res.mi = min(x.mi, y.mi);
    res.mx = max(x.mx, y.mx);
    res.ok = 0;
    if (x.ok && y.ok && x.mi > y.mx) res.ok = 1;
    return res;
  }
} T[(200135) * 4];
void Up(int rt, int l, int r) { T[rt] = T[(rt << 1)] + T[(rt << 1 | 1)]; }
void uptMx(int rt, int l, int r, int pos, int val) {
  if (l + 1 == r) {
    T[rt].mx = val;
    T[rt].ok = T[rt].mi > T[rt].mx;
    return;
  }
  int mid = (l + r) / 2;
  if (pos <= mid)
    uptMx((rt << 1), l, mid, pos, val);
  else
    uptMx((rt << 1 | 1), mid, r, pos, val);
  Up(rt, l, r);
}
void uptMi(int rt, int l, int r, int pos, int val) {
  if (l + 1 == r) {
    T[rt].mi = val;
    T[rt].ok = T[rt].mi > T[rt].mx;
    return;
  }
  int mid = (l + r) / 2;
  if (pos <= mid)
    uptMi((rt << 1), l, mid, pos, val);
  else
    uptMi((rt << 1 | 1), mid, r, pos, val);
  Up(rt, l, r);
}
void fmain(int tid) {
  scanf("%d%d%d", &n, &m, &k);
  for (int(i) = 1; (i) <= (int)(m); (i)++) {
    A[i].insert((1 << 30));
    B[i].insert(-(1 << 30));
  }
  for (int(i) = 1; (i) <= (int)(k); (i)++) {
    int x, y;
    scanf("%d%d", &x, &y);
    int X = (x + 1) / 2, Y = (y + 1) / 2;
    int w = x & 1;
    if (mp.find({X, Y}) == mp.end() || (mp[{X, Y}] & (1 << w)) == 0) {
      mp[{X, Y}] |= 1 << w;
      if (mp[{X, Y}] == 3) invalid++;
      if (w == 1) {
        A[Y].insert(X);
        uptMi(1, 0, m, Y, *A[Y].begin());
      } else {
        B[Y].insert(X);
        uptMx(1, 0, m, Y, *B[Y].rbegin());
      }
    } else {
      if (mp[{X, Y}] == 3) invalid--;
      mp[{X, Y}] ^= 1 << w;
      if (w == 1) {
        A[Y].erase(X);
        uptMi(1, 0, m, Y, *A[Y].begin());
      } else {
        B[Y].erase(X);
        uptMx(1, 0, m, Y, *B[Y].rbegin());
      }
    }
    if (invalid)
      puts("NO");
    else {
      puts(T[1].ok ? "YES" : "NO");
    }
  }
}
int main() {
  int t = 1;
  for (int(i) = 1; (i) <= (int)(t); (i)++) {
    fmain(i);
  }
  return 0;
}
