> #include"iostream"
> #include"memory"
> using namespace std;
> int max(int x,int y)
> {
>     if(x>y) return x;
>     return y;
> }
> 
> int main()
> {
>     int i,j ,n;
>     int a[351][351];
>     memset(a,0,sizeof(a));
>     cin>>n;
>     cout<<"\n";
>     for(i=1;i<=n;i++)
>     {
>         for(j=1;j<=i;j++)
>             cin>>a[i][j];
>         cout<<"\n";
>     }
>     for(i=n;i>1;i--)
>         for(j=1;j<=i;j++)
>             a[i-1][j]=a[i-1][j]+max(a[i][j],a[i][j+1]);
>     cout<<a[1][1]<<endl;
>     return 0;
> }