蒟蒻QWQ2008 @ 2021-02-14 18:43:29
#include<cstdio>
#include<iostream>
#include <algorithm>
using namespace std;
int n;
int cnt=0;
void dfs(int cur,int res)
{
if(res>=cur)
{
cnt++;
return ;
}
dfs(cur,res+1);
dfs(cur,res+2);
}
int main()
{
cin>>n;
dfs(n,1);
cout<<cnt;
}
by Implicit @ 2021-02-14 18:44:50
@蒟蒻QWQ2008
by _caiji_ @ 2021-02-14 18:45:16
记忆化。
还有,这题需要高精度。
by _Empty @ 2021-02-14 18:46:00
猪也爽铁
by EuphoricStar @ 2021-02-14 18:46:31
看标签:斐波那契数列
by 蒟蒻QWQ2008 @ 2021-02-14 18:51:10
怎么记忆化?
by BMTXLRC @ 2021-02-14 18:53:24
@蒟蒻QWQ2008 别打搜索,容易炸,打DP最好了
by LYNiko @ 2021-02-15 11:46:46
要用高精度+斐波那契数列做