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
2 2
2 2
1 1
2 2
1 1
2 2
2 2
2 2
1 1
1 1
2 2
1 1
2 2
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
2 2
1 1
2 2
1 1
2 2
1 1
1 1
1 1
2 2
1 1
1 1
2 2
1 1
1 1
2 2
1 1
2 2
1 1
1 1
1 1
2 2
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
1 1
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
 10 10 10
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
1 3
3 3
4 4
3 1
1 3
3 3
2 2
2 4
4 2
4 2
1 1
3 1
 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
2 2
1 3
1 1
2 6
1 5
1 5
2 4
2 4
1 3
1 5
2 4
2 6
1 3
1 1
1 3
2 6
2 2
2 2
1 1
2 2
2 6
1 5
1 3
2 6
2 4
2 2
2 2
2 6
1 3
1 5
2 2
2 4
2 2
1 3
2 2
1 5
2 4
2 6
2 2
1 5
2 6
2 6
2 6
1 3
1 5
2 2
2 2
1 1
1 5
1 3
1 3
2 2
2 4
1 5
2 2
2 6
1 3
1 3
1 3
 2 2 2
1 3
1 1
 10 10 10
17 11
11 15
8 8
2 4
7 7
9 13
12 8
18 2
15 13
13 17
 1 10 10
2 16
1 1
1 19
2 10
2 4
2 18
2 12
2 6
2 14
2 2
 1 2 100
1 3
2 2
2 4
1 3
2 4
1 1
2 2
1 1
2 4
2 2
2 2
1 3
2 4
1 3
2 4
2 2
2 2
2 4
1 3
2 2
2 4
1 1
2 4
1 3
1 1
1 1
2 4
2 2
1 1
1 3
1 1
1 1
1 1
1 1
2 2
2 4
1 1
1 3
2 4
1 1
1 1
2 4
1 3
1 1
2 4
2 4
1 1
1 1
2 4
2 4
2 4
1 1
2 4
1 3
1 3
2 2
1 1
2 2
1 1
1 3
1 1
2 2
2 4
2 4
2 2
1 3
2 2
1 1
2 4
1 1
2 4
2 4
2 4
2 2
2 2
1 3
2 2
2 2
1 1
2 4
1 1
2 2
2 2
1 1
2 2
1 3
1 3
1 3
1 1
2 4
1 3
1 3
1 1
1 1
1 1
2 4
1 3
1 1
2 4
2 2
 3 3 20
1 1
3 1
1 1
1 1
5 1
3 5
1 3
4 4
1 1
3 1
4 4
4 6
1 3
3 5
6 6
1 1
6 6
1 1
3 3
4 6
 10 10 10
7 19
14 8
15 13
6 6
10 8
18 6
3 1
16 4
8 10
12 12
 10 10 10
4 4
18 20
11 9
1 15
2 2
14 6
2 12
17 9
11 13
8 2
 3 2 10
4 2
6 4
1 3
4 2
6 4
2 2
2 4
1 3
4 4
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
2 2
1 1
1 1
1 1
1 1
1 1
2 2
1 1
2 2
1 1
1 1
2 2
1 1
 1 1 1
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

YES
YES
YES
YES
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import java.io.*;
import java.util.*;

public class Solution {

    private void solve() throws Exception {
        int n = nextInt();
        int m = nextInt();
        int q = nextInt();

        int nn = n+1;
        int size = 2;
        while (nn > 0) {
            nn /= 2;
            size *= 2;
        }
        a = new int[size];
        Arrays.fill(a, 1<<30);
        b = new int[size];
        Arrays.fill(b, -1);
        flag = new boolean[size];
        Arrays.fill(flag, true);

        TreeSet<Integer>[] A = new TreeSet[n+1];
        TreeSet<Integer>[] B = new TreeSet[n+1];
        for(int i = 0; i <= n; i++) {
            A[i] = new TreeSet<Integer>();
            A[i].add(1<<30);
            B[i] = new TreeSet<Integer>();
            B[i].add(-1);
        }
        
        for (int qq = 1; qq <= q; qq++) {
            int i = nextInt()-1;
            int j = nextInt()-1;
            if(i%2 == 0) {
                int x = i/2;
                int y = j/2;
                if(A[x].contains(y)) A[x].remove(y);
                else A[x].add(y);
                updateIndexA(1, 0, n, x, A[x].first());
            } else {
                int x = i/2+1;
                int y = j/2;
                if(B[x].contains(y)) B[x].remove(y);
                else B[x].add(y);
                updateIndexB(1, 0, n, x, B[x].last());
            }
            System.out.println(flag[1]?"YES":"NO");
//            int jj = 2*m-1-j;
//            if(i%2 == 1) {
//                TreeOdd.updateIndex(1, 0, 2*n-1, i, j);
//                int max = TreeEven.queryRange(1, 0, 2*n-1, 0, i);
//                if(max >= jj) ok = false;
//            } else {
//                TreeEven.updateIndex(1, 0, 2*n-1, i, jj);
//                int max = TreeOdd.queryRange(1, 0, 2*n-1, i, 2*n-1);
//                if(max >= j) ok = false;
//            }
//            System.out.println(ok?"YES":"NO");
        }
    }

    int[] a;
    int[] b;
    boolean[] flag;

    void updateIndexA(int node, int start, int end, int index, int value) {
        if (start > end || start > index || end < index) // Current segment is not within range [l, r]
            return;
        if (start >= index && end <= index) { // Segment is fully within range
            a[node] = value;
            return;
        }
        int mid = (start + end) / 2;
        updateIndexA(node * 2, start, mid, index, value); // Updating left child
        updateIndexA(node * 2 + 1, mid + 1, end, index, value); // Updating right child
        a[node] = Math.min(a[node * 2], a[node * 2 + 1]);
        flag[node] = a[node * 2] > b[node * 2 + 1] && flag[node * 2] && flag[node * 2 + 1];
    }
    
    void updateIndexB(int node, int start, int end, int index, int value) {
        if (start > end || start > index || end < index) // Current segment is not within range [l, r]
            return;
        if (start >= index && end <= index) { // Segment is fully within range
            b[node] = value;
            return;
        }
        int mid = (start + end) / 2;
        updateIndexB(node * 2, start, mid, index, value); // Updating left child
        updateIndexB(node * 2 + 1, mid + 1, end, index, value); // Updating right child
        b[node] = Math.max(b[node * 2], b[node * 2 + 1]);
        flag[node] = a[node * 2] > b[node * 2 + 1] && flag[node * 2] && flag[node * 2 + 1];
    }
    
//    boolean queryRange(int node, int start, int end, int l, int r) {
//        if (start > end || start > r || end < l)
//            return true; // Out of range
//        if (start >= l && end <= r) // Current segment is totally within range [l, r]
//            return flag[node];
//        int mid = (start + end) / 2;
//        boolean V1 = queryRange(node * 2, start, mid, l, r); // Query left child
//        boolean V2 = queryRange(node * 2 + 1, mid + 1, end, l, r); // Query right child
//        return V1 && V2;
//    }
//
//    int queryRangeA(int node, int start, int end, int l, int r) {
//        if (start > end || start > r || end < l)
//            return 1<<30; // Out of range
//        if (start >= l && end <= r) // Current segment is totally within range [l, r]
//            return a[node];
//        int mid = (start + end) / 2;
//        int V1 = queryRangeA(node * 2, start, mid, l, r); // Query left child
//        int V2 = queryRangeA(node * 2 + 1, mid + 1, end, l, r); // Query right child
//        return Math.min(V1, V2);
//    }
//    
//    int queryRangeB(int node, int start, int end, int l, int r) {
//        if (start > end || start > r || end < l)
//            return 0; // Out of range
//        if (start >= l && end <= r) // Current segment is totally within range [l, r]
//            return a[node];
//        int mid = (start + end) / 2;
//        int V1 = queryRangeB(node * 2, start, mid, l, r); // Query left child
//        int V2 = queryRangeB(node * 2 + 1, mid + 1, end, l, r); // Query right child
//        return Math.max(V1, V2);
//    }

    public static void main(String[] args) {
        new Thread(null, new Runnable() {
            public void run() {
                new Solution().run();
            }
        }, "1", 1 << 27).start();
    }

    private BufferedReader in;
    private PrintWriter out;
    private StringTokenizer tokenizer;

    public void run() {
        try {
//            in = new BufferedReader(new FileReader("ks_10000_0"));
            in = new BufferedReader(new InputStreamReader(System.in));
            tokenizer = null;
            // out = new PrintWriter(new File("outputPQ.txt"));
            out = new PrintWriter(System.out);
            solve();
            in.close();
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(1);
        }
    }

    private int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }

    private long nextLong() throws IOException {
        return Long.parseLong(nextToken());
    }

    private float nextFloat() throws IOException {
        return Float.parseFloat(nextToken());
    }

    private String nextLine() throws IOException {
        return new String(in.readLine());
    }

    private String nextToken() throws IOException {
        while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(in.readLine());
        }
        return tokenizer.nextToken();
    }

}
