#include <iostream.h>
#include <fstream.h>

main()
{int u[16][16],i,j,v[32],s=0,z=0,l=0,n,m,min=-1;
ifstream f("flip.in");
ofstream g("flip.out");
f>>n>>m;
for (i=1;i<=32;i++)
	  v[i]=0;
for (i=0;i<n;i++) {s=0;z=0;
						 for (j=0;j<m;j++)
											 {f>>u[i][j];
												s=s+u[i][j];
												z=z+(u[i][j]*min);
																		}

						 if (s<z) v[l]=z;
						 else v[l]=s;

						l++;}


for (i=0;i<m;i++) {s=0;z=0;
						 for (j=0;j<n;j++)
											  {s=s+u[i][j];
												z=z+(u[i][j]*min);
																		}
						 if (s<z) v[l]=z;
						 else v[l]=s;
							  l++;}
				 s=0;
for (i=0;i<32;i++)
		 s=s+v[i];

g<<s;
					  }