#include <stdio.h>
#include <string.h>



int main()
{
    int m, n, k, i, j, t, x, y, c, c1;
    char grid[1005][1005];
    scanf("%d", &t);
    while(t--){
        scanf("%d %d %d", &m, &n, &k);
        for(i = 0; i < k; i++){
            scanf("%d %d", &x, &y);
            x--;
            y--;
            grid[x][y] = '*';
        }
        c = 0;
        c1 = 0;
        for(i = 0; i < m; i++){
            j = 0;
            while(j < n){
                while(j < n && grid[i][j] != '*'){
                    c1++;
                    j++;
                }
                if(c1 > 1){
                    c++;
                }
                c1 = 0;
                j++;
            }
            c1 = 0;
        }
        c1 = 0;
        for(j = 0; j < n; j++){
            i = 0;
            while(i < m){
                while(i < m && grid[i][j] != '*'){
                    c1++;
                    i++;
                }
                if(c1 > 1){
                    c++;
                }
                c1 = 0;
                i++;
            }
            c1 = 0;
        }
        printf("%d\n", c);
    }
    return 0;
}