Cod sursa(job #467516)

Utilizator DraStiKDragos Oprica DraStiK Data 29 iunie 2010 10:57:42
Problema Ratphu Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.67 kb
#include <algorithm>
using namespace std;

#define MAX (1<<18)+5
#define DIM 20

long long bst[MAX][DIM];
long long n;
int v[DIM];
int p,nr;

void solve ()
{
    int i,j,k;

    for ( ; n; n/=10)
        v[nr++]=n%10;
    bst[0][0]=1;
    for (i=0; i<(1<<nr); ++i)
        for (j=0; j<p; ++j)
            if (bst[i][j])
                for (k=0; k<nr; ++k)
                    if (!(i&(1<<k)))
                        bst[i|(1<<k)][(j*10+v[k])%p]+=bst[i][j];
    printf ("%lld",bst[(1<<nr)-1][0]);
}

int main ()
{
    freopen ("ratphu.in","r",stdin);
    freopen ("ratphu.out","w",stdout);

    scanf ("%lld%d",&n,&p);
    solve ();

    return 0;
}