Pagini recente » Cod sursa (job #3191846) | Cod sursa (job #1576028) | Cod sursa (job #1997048) | Cod sursa (job #2396181) | Cod sursa (job #2587360)
#include <cstdio>
#include <algorithm>
#pragma GCC optimize ("O3")
long long dp[(1<<18)+1][25];
int digits[20];
FILE *in = fopen("ratphu.in","r");
FILE *out = fopen("ratphu.out","w");
signed main() {
long long n;
int p,numberOfDigits=0;
fscanf(in,"%lld %d",&n,&p);
while(n) {
digits[++numberOfDigits]=n%10;
n/=10;
}
std::reverse(digits + 1,digits+numberOfDigits + 1);
dp[0][0]=1;
for(int i=0;i<(1<<18);++i) {
for(int j=0;j<p;++j) {
if(dp[i][j])
for(int k=1;k<=numberOfDigits;++k) {
if((i&(1<<(k-1))) == 0) {
dp[i | (1<<(k-1))][(j*10+digits[k])%p]+=dp[i][j];
}
}
}
}
fprintf(out,"%lld",dp[(1<<numberOfDigits)-1][0]);
return 0;
}