#include <iostream>

using namespace std;

int main()
{
   int mat[100][100],sum=0,n,m;
   cout<<"Introduceti numarul de linii al matricei: ";
   cin>>n;
   cout<<"introduceti numarul de coloane al matricei: ";
   cin>>m;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            cout<<"A "<<i<<" "<<j<<" = ";
            cin>>mat[i][j];
        }
    }

   for(int i=1;i<=n;i++)
   {
       for(int j=1;j<=m;j++)
       {
           if(mat[i][j]>0)
           {
                sum=sum+mat[i][j];
           }

       }
   }
   cout<<"Suma maxima care se poate obtine este: "<<sum;
   return 0;
}