#include #include using namespace std; int n, k,a[8] = { 0, 1, 2, 3, 4, 5, 6, 7 },allans=0; bool ce[8]={0}; bool pan(int n) { int len = sqrt(n); for (int i = 2; i <= len; i++) { if (n % i == 0) { return 0; } } return 1; } void dg(int xian){ if(xian>n){ // for(int i=1;i<=n;i++){ // cout<allans){ allans=ans; } } for(int i=2;i<=n;i++){ if(ce[i]==0){ a[xian]=i; ce[i]=1; dg(xian+1); ce[i]=0; } } } int main() { int now = 0, zong = 1, ans = 0; cin >> n >> k; if (k == 1) { if (n == 1) { cout << "0" << endl << "0"; } else { int chu = 1; for (int i = 3; i <= n; i+=2) { chu++; } cout << chu << endl << chu; } } else { for (int i = n - k + 2; i <= n; i++) { now *= 10; now += a[i]; zong *= 10; } for (int i = 1; i <= n; i++) { now %= zong; now *= 10; now += a[i]; ans += pan(now); } cout<