Cod sursa(job #149257)
Utilizator | Data | 5 martie 2008 14:51:00 | |
---|---|---|---|
Problema | Nunta | Scor | 30 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.28 kb |
//nunta
#include<fstream.h>
int n,k;
long int nr;
void back()
{if(k==n) nr++;
else if(k<n){ k++;back(); k++; back();k-=2;}
}
int main()
{ifstream f("nunta.in");
ofstream g("nunta.out");
f>>n;
back();
g<<nr;
f.close();
g.close();
return 0;
}