Cod sursa(job #62767)
| Utilizator |  Florian Marcu Florian |
Data | 23 mai 2007 22:14:00 |
|---|---|---|---|
| Problema | 12-Perm | Scor | 0 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.35 kb |
#include<stdio.h>
FILE*f=fopen("12perm.in","r");
FILE*g=fopen("12perm.out","w");
int t(int n)
{
if(n==1) return 1;
else if(n==2) return 2;
else if (n==3) return 6;
else if (n==4) return 12;
else return t(n-1)+t(n-3)+2*(n-1);
}
int main()
{
long n;
long long unsigned x;
fscanf(f,"%ld",&n);
x=t(n);
fprintf(g,"%llu",x);
return 0;
}