Cod sursa(job #2080020)

Utilizator LauraNaduLaura Nadu LauraNadu Data 2 decembrie 2017 12:22:00
Problema 12-Perm Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream f("12perm.in");
ofstream g("12perm.out");
int n, i, a, b, c;
int main ()
{
    f>>n;
    a=2;
    b=3*a;
    c=2*b;
    for(i=5;i<=n;i++)
    {
        int x=(c+a+2*(i-2)) & ((1 << 20)-1);
        a=b;
        b=c;
        c=x;
    }
    g<<c;
    return 0;
}