#include using namespace std; #define rep(i,n) for(ll i=0;i=0;i--) #define perl(i,r,l) for(ll i=r-1;i>=l;i--) #define fi first #define se second #define pb push_back #define ins insert #define pqueue(x) priority_queue,greater> #define all(x) (x).begin(),(x).end() #define CST(x) cout<; using vvl=vector>; using pl=pair; using vpl=vector; using vvpl=vector; const ll MOD=1000000007; const ll MOD9=998244353; const int inf=1e9+10; const ll INF=4e18; const ll dy[8]={1,0,-1,0,1,1,-1,-1}; const ll dx[8]={0,-1,0,1,1,-1,1,-1}; template inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; } template inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; } class osak{ vector res; public: osak(long long n){//sieve(n),O(N); res=vector(n); iota(res.begin(), res.end(), 0); for (int i = 2; i*i < n; ++i) { if (res[i] < i) continue; for (int j = i*i; j < n; j += i) if (res[j] == j) res[j] = i; } } vector factor(int n) {//O(logN) // min_factor は sieve() で得られたものとする vector factor; while (n > 1) { factor.push_back(res[n]); n /= res[n]; // 割った後の値についても素因数を知っているので順次求まる } return factor; } vector divisor(int N){//O(div.size()) vector facs=factor(N); int n=facs.size(); vector ret={1}; for(int i=0;i> n >>k; ll ans=0; osak os(2000100); repl(i,2,n+1){ auto fac=os.factor(i); unordered_set st; for(auto p:fac)st.ins(p); if(st.size()>=k)ans++; } cout << ans <