#include using namespace std; #define int long long #define endl "\n" const int N = 100010; // 筛法求莫比乌斯函数(枚举约数) int mu[N]; int primes[N], cnt; bool st[N]; void get_mobius(int n) { mu[1] = 1; for (int i = 2; i <= n; i++) { if (!st[i]) { primes[cnt++] = i; mu[i] = -1; } for (int j = 0; primes[j] <= n / i; j++) { int t = primes[j] * i; st[t] = true; if (i % primes[j] == 0) { mu[t] = 0; break; } mu[t] = -mu[i]; } } } int check(int mid, int k) { int res = 0; for (int i = 1; i * i <= mid; i++) // 枚举范围内每个平方数 res += mu[i] * (mid / i / i); return res >= k; } signed main() { // 获取莫比乌斯函数值 get_mobius(N - 1); int T, k; cin >> T; // T组测试数据 while (T--) { cin >> k; // 第k个数 int l = 1, r = 2e9; while (l < r) { int mid = l + r >> 1; if (check(mid, k)) r = mid; else l = mid + 1; } cout << r << endl; } }