Cod sursa(job #1473121)

Utilizator enedumitruene dumitru enedumitru Data 18 august 2015 16:45:03
Problema Ratphu Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.64 kb
#include <fstream>
using namespace std;
ifstream f("ratphu.in"); ofstream g("ratphu.out");
long long n,n1,dp[1<<18][20];// numarul de posibilitati luand configuratia 'i', sa am restul 0
int cif[20];
int main()
{   int i=0,q,p,a,k,j;
    f>>n>>p;
    n1=n;
    while(n1) {cif[i]=n1%10; n1/=10;i++;}
    q=i;
    for(k=0;k<q;++k)
        dp[1<<k][cif[k]%p]=1;
    for(i=1;i<=(1<<q)-1;++i)
    for(j=0;j<q;++j)
    {
        if((i&(1<<j))==0) {
                for(k=0;k<p;++k)
                {
                    dp[i|(1<<j)][(k*10+cif[j])%p]+=dp[i][k];
                }
        }
    }
    g<<dp[(1<<q)-1][0]; g.close(); return 0;
}