AC ぴ诗情画奕﹌ · 发布于 2023-08-01 · 浏览 741 回复 0 include<stdio.h> int main() { int n; scanf("%d",&n); int ans=1; for(int i=1;i<=n;i++) { ans=(ans+1)*2; } printf("%d",ans); return 0; }
