#include<iostream.h>
void main()
{
int m,n,a[100][100],i,j,s1=0,s2=0,max=0;
cout<<"n=";cin>>n;
cout<<"m=";cin>>m;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
cin>>a[i][j];
if(i<0 && j>0 && sqrti>j)
  s1=s1+a[i][j]*(-1);
if(i>0 && j<0 && sqrtj>i)
  s2=s2+a[i][j]*(-1);
if (s1>max)
  max=s1;
if (s2>max)
  max=s2;
if(s1>s2)
  max=s2;
  s2=s1;
  s1=max;
else
   max=s1;
   s1=s2;
   s2=max;
cout<<"max="<<max;
}