Cod sursa(job #1892144)

Utilizator vladm98Munteanu Vlad vladm98 Data 24 februarie 2017 18:50:37
Problema Ratphu Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.88 kb
#include <bits/stdc++.h>

using namespace std;
int v[19];
long long dp[524300][20];
int rest[300];
int main()
{
    ifstream fin ("ratphu.in");
    ofstream fout ("ratphu.out");
    long long n;
    int p;
    fin >> n >> p;
    int nr_cifre=0;
    for (int i = 0; i<300; ++i)
        rest[i] = i%p;
    while (n)
    {
        v[nr_cifre]=n%10;
        ++nr_cifre;
        n/=10;
    }

    dp[0][0]=1;
    int m = (1<<(nr_cifre))-1;
    for (int i = 0; i<m; ++i)
    {
        for (int j = 0; j<p; ++j)
        {
            if (dp[i][j])
            {
                for (int k=0; k<nr_cifre; ++k)
                {
                    if ((i&(1<<k))==0)
                    {
                        dp[i|(1<<k)][rest[j*10+v[k]]]+=dp[i][j];
                    }
                }
            }
        }
    }
    fout << dp[m][0];
    return 0;
}