题解

#include<iostream>
#include<cstdio> 
#include<cmath>
#include<algorithm>
#include<vector>
#include<queue>
#define ll long long
#define si short int
using namespace std;
const int N=3e5+9;
const int INF=0xffffff; 
ll l,r;
int main()
{
	cin>>l>>r;
	for(ll i=l;i<=r;i+=2) cout<<i<<" ";
}