Cod sursa(job #2759239)

Utilizator JeomIlascu Beatrice Georgiana Jeom Data 16 iunie 2021 12:21:28
Problema Nivele Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.77 kb
#include <fstream>
#include <stack>
using namespace std;
ifstream fin("nivele.in");
ofstream fout("nivele.out");

int n,q;
int main()
{
    int i,x,j;
    fin>>q;

    for(j=1;j<=q;++j)
    {
       fin>>n;
       stack <int> S;
       for(i=1;i<=n;++i)
       {
           fin>>x;
           if(S.empty())S.push(x);
           else
           {
               if(S.top()!=x)S.push(x);
               else
               {
                   while(!S.empty()&&S.top()==x)///  x=1
                   {
                       S.pop();
                       x--;
                   }
                   S.push(x);

               }
           }
       }
       if(!S.empty()&&S.top()==1)fout<<"DA\n";
       else fout<<"NU\n";
    }
    return 0;
}