#include #include using std::string; int a[15], vis[15]; int ans = 0; int k; void dfs(int p,int now){ if(p==9){ if(now%k==0) ans++; } else{ for(int i = 1; i <= 8; i++){ if(!vis[i]){ vis[i] = 1; //now = now*10 + i; dfs(p+1, now*10+i); vis[i] = 0; } } } } int main(){ //int k; scanf("%d",&k); dfs(1,0); printf("%d\n",ans); return 0; }