#include<fstream.h>

ifstream in("elimin.in");
ofstream out("elimin.out");

int m,n,r,c;
int v[7294];
int col[100];
int ran[100];

int i,j;
int a,b;

int min,min2;
int sum;

int main(){

in>>m>>n>>r>>c;

for(i=0;i<m*n;i++) {
	in>>v[i];
	a = i/n;
	ran[a] += v[i];
}

min = ran[0];
for(i=0;i<n;i++) if(ran[i]<min) { min = ran[i]; min2 = i; }
for(i=min2*n+1;i<m*n;i++) v[i]=0;

for(i=0;i<m*n;i++) {
	b = i%n;
	col[b] += v[i];
}

min = col[0];
min2 = 0;
for(i=0;i<m;i++) if(col[i]<min) { min = col[i]; min2 = i; }
for(i=0;i<m*n;i++) if(i%n == min2) v[i] = 0;

for(i=0;i<m*n;i++) sum += v[i];
out<<sum;


return 0;
}