Cod sursa(job #3153859)

Utilizator suimerchantsui merchant suimerchant Data 1 octombrie 2023 17:12:29
Problema Ratphu Scor 50
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.46 kb
#include<bits/stdc++.h>
using namespace std;


ifstream fin("ratphu.in");
ofstream fout("ratphu.out");


int p;
int dp[1<<18][21];
char s[20];


int main()
{
    fin>>(s)>>p;
    int n=strlen(s);
    dp[0][0]=1;
    for(int stare=0;stare<(1<<n);stare++)
        for(int k=0;k<p;k++)
            for(int i=0;i<n;i++)
                if(!(stare&(1<<i))) dp[stare | (1<<i)][(k*10+s[i]-'0')%p]+=dp[stare][k];
    fout<<dp[(1<<n)-1][0];
    return 0;
}