#include<bits/stdc++.h> using namespace std; typedef long long ll; #define fi first #define se second const int N=2e5+1; int n,q; ll a[N]; int main(){ ios::sync_with_stdio(false);cin.tie(0); int x,y;cin >> x >> y; if(x==0 ) cout << "https://www.codechef.com/practice\n"; else if(x==1 && y==0) cout << "https://www.codechef.com/contests\n"; else cout << "https://discuss.codechef.com\n"; }