#include<iostream>
using namespace std;
void min_max()
{int n,a[1001],i,min,max;
    cin>>n;
    for(i=1; i<=n; i++)
        cin>>a[i];
    min=a[1];
    max=a[1];
    for(i=1; i<=n; i++)
    {
        if(a[i]<min)
            min=a[i];
        if(a[i]>max)
            max=a[i];
    }
    cout<<min<<' '<<max<<'\n';
}
void suma_cifre()

    {
        //suma cifrelor
        int x,S=0;
        cin>>x;
        while(x!=0)
        {
            S=S+x%10;
            x=x/10;
        }
        cout<<S;

    }
void oglindit()
{   //OGLINDITUL
        int x,o=0;
        cin>>x;
        while(x)
        {
            o=o*10+x%10;
            x=x/10;
        }
        cout<<o;
    }
void palindtom()
 {  //Palindrom
        int x,o=0,y;
        cin>>x;
        y=x;
        while(x)
        {
            o=o*10+x%10;
            x=x/10;
        }
        if(o==y)
            cout<<"PALINDROM";
        else
            cout<<"NU E PALINDROM";
    }
void

int main()
{
    int t;
    cin>>t;
    if(t==1) min_max();
    else if(t==2) suma_cifre();
    else if(t==3) oglindit();
    else if (t==4) palindtom();










    {   //ALGORITM EUCLID
        int a,b,r;
        cin>>a>>b;
        while(b!=0)

        {
            r=a%b;
            a=b;
            b=r;
        }
        cout<<a;
    }

    {
       //NUMAR PRIM
        int d,n,prim=1;
        cin>>n;
        for(d=2; d*d<=n; ++d)
            if(n%d==0)
                prim=0;
        if(prim)
            cout<<"NUMAR PRIM";
        else
            cout<<"NUMAR NEPRIM";
    }


    {  //COMPUNEREA UNUI NUMAR DIN CIFRELE SALE
        int x=0,n,c,i;
        cin>>n;
        for(i=1; i<=n; ++i)
        {
            cin>>c;
            x=x*10+c;
        }
        cout<<x;
    }

}