#include <iostream>

using namespace std;
int nrGr=0;
int nr,n,m,a[30000][30000];
int sub1_1()
{
     int a,b,l,p;
   cin>>a>>b;
   l=a;
   p=0;
   while(a%b!=0)
   {
       p+=a/b+2;
       a=l-(b-(a%b));
   }
    p+=a/b-1;
    return p;
}
void sub1_2()
{int n;cin>>n;
    int v[n][n];
    vector <int> w[9];
    for(int i=0;i<=9;i++)
    {
        w[i]=0;
    }

    for(int i=1;i<=n;i++)
    {
        int x;
        cin>>x;
        int c1=0;
        int y=x;
        while(x)
        {
            if(23%2==1)
            {
                c1++;
            }
            x/=2;
        }
        w[c1]++;
        v[c1][w[c1]]=y;
    }
    for(int i=1;i<=9;i++)
    {
        if(w[i])
        {
            nrGr++;cout<<"(";
            for(int j=1;j<w[i];j++)
            {
                cout<<a[i][j]<<",";
            }
            cout<<a[i][w[i]]<<") ";
        }
    }
}
void citire_sub3()
{
    cin>>nr>>m>>n;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            cin>>a[i][j];
        }
    }
}
int cifra_control_sub3(int n)
{
    int s=0;
    while(n)
    {
        s+=n%10;
        n/=10;
    }
    if(s>10)
    {
        cifra_control_sub3(s);
    }
    else
    {
       return s;
    }
}
void det_prefix_max_sub3()
{int v[9](0);
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            int x=cifra_control_sub3(a[i][j]);
            v[x]++;
        }
    }
    while(nr)
    {
       t=t*10+nr%10;
       nr/=10;
    }
    int c=t%10;
    int pr=0;
    while(c)
    {
        v[c]--;
        pr=pr*10+c;
        t/=10;
        c=t;
    }
    if(!pr)
    {
        cout<<"nu exista";
    }
    else
    {
        cout<<pr;
    }
}
int main()
{

    return 0;
}