#include <bits/stdc++.h>
using namespace std;
int t, n, m, k, a[54][54], visited[54][54], b, c, ret;
int dy[] = {-1, 0, 1, 0};
int dx[] = {0, 1, 0, -1};
 
void dfs(int y, int x){
    for(int i = 0; i < 4; i++){
        int ny = y + dy[i];
        int nx = x + dx[i];
        if(ny < 0 || ny >= n || nx < 0 || nx >= m || visited[ny][nx] || !a[ny][nx]) continue;
        visited[ny][nx] = 1;
        dfs(ny, nx);
    }
}
 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    cin >> t;
    while(t--){
        fill(&a[0][0], &a[0][0] + 54 * 54, 0);
        fill(&visited[0][0], &visited[0][0] + 54 * 54, 0);
        cin >> m >> n >> k;
        for(int i = 0; i < k; i++){
            cin >> b >> c;
            a[c][b] = 1;
        }
        for(int i = 0; i < n; i++){
            for(int j = 0; j < m; j++){
                if(!visited[i][j] && a[i][j]){
                    visited[i][j] = 1;
                    dfs(i, j);
                    ret++;
                }
            }
        }
        cout << ret << '\n';
    }
}

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2
10 8 17
0 0
1 0
1 1
4 2
4 3
4 5
2 4
3 4
7 4
8 4
9 4
7 5
8 5
9 5
7 6
8 6
9 6
10 10 1
5 5