题解 | #跳台阶扩展问题#
跳台阶扩展问题
https://www.nowcoder.com/practice/953b74ca5c4d44bb91f39ac4ddea0fee
#include <iostream> using namespace std; int main() { int n; cin >> n; int res = 1; if(n < 2) cout << res; else cout << (res<<(n-1)); return 0; } // 64 位输出请用 printf("%lld")