Cod sursa(job #1404339)

Utilizator badea_adi1999Badea Adrian Catalin badea_adi1999 Data 28 martie 2015 00:12:04
Problema 12-Perm Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include <fstream>
#define mod (1<<20)-1
#define nmax 15000001
using namespace std;
ifstream f("12perm.in");
ofstream g("12perm.out");
int n,v[nmax];

int main()
{
    int i;
    f>>n;
    v[1]=1;v[2]=2;
    v[3]=6;v[4]=12;
    for (i=5;i<=n;i++) {
        v[i]=v[i-1]+v[i-3]+(i-2)<<1;
        v[i]&=mod;
    }
    g<<v[n];
    return 0;
}