#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define rd_init() char*rp=({char*mmap();mmap(0l,1l<<25,1,2,0,0ll);})
#define rd_skip_line() while(*rp++!=10)
#define rd() ({int _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})
#define wt(v) ({unsigned _z=v;do*--wp=_z%10+48;while(_z/=10);})
#define wt1(v) ({char wbuf[64],*wp=wbuf+sizeof wbuf;wt(v);write(1,wp,wbuf+sizeof wbuf-wp);})
#define rep(v,e) for(typeof(e) v=0;v<e;++v)
#define min(a,b) (a<=b?a:b)
#define max(a,b) (a>=b?a:b)

typedef unsigned long ulong;

long f[2002][2002];

void f1(char*rp,long h,long w,long n){
	rep(i,n)rd_skip_line();
	while(*rp){
		long x=rd();
		long y=rd();
		long b=rd();
		long c=rd();
		long x0=max(0,x-b);
		long x1=min(h,x+b)+1;
		long y0=max(0,y-b);
		long y1=min(w,y+b)+1;
		f[x0][y0]+=c;
		f[x0][y1]-=c;
		f[x1][y0]-=c;
		f[x1][y1]+=c;
	}
}

void f2(long h,long w){
	rep(x,h+1){
		long d=0,e=0;
		rep(y,w+1){
			f[x][y]=d+=e+=f[x][y];
		}
	}
	rep(y,w+1){
		long d=0,e=0;
		rep(x,h+1){
			f[x][y]=d+=e+=f[x][y];
		}
	}
}

long f3(char*rp,long n){
	long z=0;
	rep(i,n){
		long t=rd()-1;
		long u=rd();
		long l=rd()-1;
		long r=rd();
		long a=rd();
		z+=a>f[t][l]-f[t][r]-f[u][l]+f[u][r];
	}
	return z;
}

int main(){
	rd_init();
	long h=rd();
	long w=rd();
	long n=rd();
	rd_skip_line();
	f1(rp,h,w,n);
	f2(h,w);
	wt1(f3(rp,n));
	_exit(0);
}