Sim BAC 2017 SII 5

///BAC 2017 simulare II 5
#include <iostream>
/**Ex: n=4
4 4 4 4
15 11 7 3
35 20 9 2
65 30 10 1
*/
using namespace std;

int main()
{
    int n,a[21][21],x,i,j;
    cin>>n;

 for(i=1;i<=n;i++)
    {
       a[1][i]=n;
       a[i][n]=n-i+1;

    }
 for(i=2;i<=n;i++)
 {
     for(j=n-1;j>=1;j--)
     {
         a[i][j]=a[i-1][j]+a[i][j+1];
     }
 }
 for(i=1;i<=n;i++)
 {
     for(j=1;j<=n;j++)
     {
         cout<<a[i][j]<<"\t ";
     }
     cout<<endl;
 }


    return 0;
}