#include<bits/stdc++.h>
using namespace std;
string s[16]={
"https://www.luogu.com.cn/paste/6f3e6wkx",//后面按照这个格式填写每关完整链接地址
"https://www.luogu.com.cn/paste/7h87im4q",
"https://www.luogu.com.cn/paste/jlet3hwv",
"https://www.luogu.com.cn/training/389522",//写4.2的，而不是4.1的
"https://www.luogu.com.cn/paste/7ilyci80",
"https://www.luogu.com.cn/paste/o7bq9sai",
"https://www.luogu.com.cn/paste/umo65rio",
"https://www.luogu.com.cn/paste/cnbeb3p3",
"https://www.luogu.com.cn/paste/tgc28ck5",
"https://www.luogu.com.cn/problem/T384767",
"https://www.luogu.com.cn/paste/07fw2xq2",
"https://www.luogu.com.cn/paste/mz100vw9",
"https://www.luogu.com.cn/paste/w5fu60yq",
"https://www.luogu.com.cn/paste/bgs3v88z",
"https://www.luogu.com.cn/paste/di45ppwh",
"https://www.luogu.com.cn/paste/9ox4n46i"};
int main(){
  int x;//16代表终点
  cin>>x;
  cout<<s[x-1]<<endl;
  return 0;
}