大大认识 ５４６ｔｒｔ · 发布于 2025-05-11 · 浏览 532 回复 0 include using namespace std; int main () { int a, n, s = 1; cin >> n; for (int a = 1; a <= n; a++) { s++; s = s * 2; } cout << s; return 0; }
