#include<bits/stdc++.h>
using namespace std;

void adaugare(nod *&p,int x)
{
    if(p==NULL)
    {
        p=new nod;
        p->info=x;
        p->urm=NULL;
    }
    else
    {
        nod *q=p;
        while(q->urm!=NULL)
            q=q->urm;
        nod *nou;
        nou=new nod;
        nou->info=x;
        q->urm=nou;
        q=nou;
        q->urm=NULL;
    }
}