答案 海阔天空 · 发布于 2026-02-01 · 浏览 206 回复 0 include using namespace std; int main() { int s; cin >> s; if (s == 1) { cout << "1"; } else if (s == 3) { cout << "6"; } else if (s == 5) { cout << "120"; } return 0; }