Cod sursa(job #205894)

Utilizator IrnukIrina Grosu Irnuk Data 3 septembrie 2008 14:14:42
Problema Nunta Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.31 kb
Raporteaza aceasta sursa 
/*nunta*/

#include<fstream.h>

int n,i;
ifstream fin("nunta.in");
ofstream fout("nunta.out");


int main()
{
	unsigned long f1=1,f2=1,sv;
	fin>>n;
	if(n<4)
		fout<<n<<'\n';
	else
	{
		for(i=3;i<=n;i++)
		{
			sv=f2;
			f2=f1+f2;
			f1=sv;
		}
		fout<<f2<<'\n';
	}
	fout.close();
	return 0;
}