#include using namespace std; bool prime[100000]; int sieve(int n) {int c=0; memset(prime, true, sizeof(prime)); for (int p=2; p<=n; p++) { if (prime[p] == true) {c++; for (int i=p*2; i<=n; i += p) prime[i] = false; } } return c; } int main() { int g; cin>>g; while(g--) { int n; cin>>n; //int c=0; int c=sieve(n);//cout<