65,187
社区成员




#include<bits/stdc++.h>
#include<iostream>
#include<cstring>
#include <algorithm>
#define ll long long
using namespace std;
int main()
{
ll n,m;
ll a0=0,a1=1;ll i;
while(cin>>n)
{i=0;a0=0,a1=1;
for( i=0;i<n;i+=2)
{
a0=a0+a1;
a1=a0+a1;
}
if(i==n) cout<<a1<<endl;
else cout<<a0<<endl;}
}