| Run ID | Author | Problem | Lang | Verdict | Score | Time | Memory | Code Length | Submit Time |
|---|---|---|---|---|---|---|---|---|---|
| 20900 | 孙喻桐 | 倒数和 | C++ | Accepted | 100 | 0 MS | 252 KB | 229 | 2021-06-20 19:35:01 |
#include<bits/stdc++.h> using namespace std; int ans[30]={0,0,3,10,30,82,226,615,1673,4549,12366,33616,91379,248396,675213,1835420,4989190,13562026,36865411,100210580,272400599},s; int main(){ cin>>s; cout<<ans[s]+1; }