#include <iostream> #include <vector> using namespace std; int main() { // 预处理前100000个美丽数 vector<int> beautiful_numbers; for (int i = 1; beautiful_numbers.size() < 100000; ++i) { if (i % 3 == 0 || i % 5 == 0) { beautiful_numbers.push_back(i); } } // 处理多组输入 int N; while (cin >> N) { // 输出第N个美丽数 cout << beautiful_numbers[N - 1] << endl; } return 0; }