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#include <iostream>
#include <fstream>
using namespace std;
int main()
{
long long a[100][100],n,m,i,j,linie,coloana,lmax,l,c,cmax,s;
ifstream f("flip.in");
ofstream g("flip.out");
f>>n>>m;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)f>>a[i][j];
cmax=0;linie=1;
for(j=1;j<=m;j++)cmax=cmax+a[1][j];
for(i=1;i<=n;i++){
c=0;
for(j=1;j<=m;j++)
c=c+a[i][j];
if(c<cmax){
cmax=c;
linie=i;
}
}
lmax=0;coloana=1;
for(i=1;i<=n;i++)lmax=lmax+a[i][1];
for(j=1;j<=m;j++){
l=0;
for(i=1;i<=n;i++)
l=l+a[i][j];
if(l<lmax){
lmax=l;
coloana=j;
}
}
s=0;
for(i=1;i<=n;i++){
for(j=1;j<=m;j++){
if(i!=linie && j!=coloana)s=s+a[i][j];
else s=s-a[i][j];
}
}
g<<s;
}