#include <stdio.h>
#include <algorithm>
using namespace std;

int m[105][105];

int main(){
	int x1, y1, x2, y2, x3, y3;
	int i, k, xm, ym, xM, yM;
	int N, W, H, r;
	scanf("%d %d", &H, &W);
	r=H*W;
	scanf("%d", &N);
	for(i=0;i<N;i++){
		scanf("%d %d %d %d %d %d", &y1, &x1, &y2, &x2, &y3, &x3);
		if(y1==y2 && x1==x2){
			printf("0\n");
		}else if(y1==y3 && x1==x3){
			printf("0\n");
		}else if(y2==y3 && x2==x3){
			printf("0\n");
		}else{
			xm=min(x1, min(x2, x3));
			ym=min(y1, min(y2, y3));
			xM=max(x1, max(x2, x3));
			yM=max(y1, max(y2, y3));
			if(xM-xm==1 && yM-ym==1)
				printf("1\n");
			else
				printf("0\n");
		}
		if(0==m[y1][x1]++)
			r--;
		if(0==m[y2][x2]++)
			r--;
		if(0==m[y3][x3]++)
			r--;
	}
	printf("%d\n", r);
	return 0;
}