#include <iostream>

using namespace std;

int main()
{
int x[10][10], i, j,s=0,m,n;
cout<<"nr de linii "; cin>>n;
cout<<"nr de col "; cin>>m;
cout<<"Introduceti elementele matricei: "<<endl;
for (i=1; i<=n; i++)
           for (j=1; j<=m; j++)
                       {
                      cin>>x[i][j];
                       }
cout<<"Afisam matricea: "<<endl;
for (i=1; i<=n; i++)
     {          for (j=1; j<=m; j++)
{cout<<x[i][j]<<" ";}
cout<<endl;}
cout<<"interschimbare elemente: "<<endl;
for (i=1;i<=m;i++){
for (j=1;j<=n;j++)
{
cout<<x[j][i]<<" ";
}
cout<<endl;}
for (i=1; i<=n; i++)
    for(j=1;j<=m; j++)
    s=s+x[i][j];
    cout<<"suma este "<<s;

}