Cod sursa(job #116813)

Utilizator RobytzzaIonescu Robert Marius Robytzza Data 19 decembrie 2007 17:08:03
Problema Nunta Scor 60
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.31 kb
Raporteaza aceasta sursa 
#include <fstream.h>
long a;
long long S,x1,x2;
int main()
{
   ifstream fin("nunta.in");
   ofstream fout("nunta.out");
   fin>>a;
   x1=1;
   x2=2;
   for (long i=2;i<a;i++)
   {
      S=x1+x2;
      x1=x2;
      x2=S;
   }
   fout<<S<<"\n" ;
   fin.close();
   fout.close();
   return 0;
}