#include<bits/stdc++.h>
using namespace std;
constexpr int maxN{1'300'000};
constexpr int L{13};
const string H{"Hello world!\n"};
char A[maxN*L],I[100];
signed main(){
  cin.tie(0)->sync_with_stdio(0);
  read(0,I,100);
  int N{},c{};
  while('0'<=I[c]&&I[c]<='9')N=N*10+I[c++]-'0';
  c=0;
  for(int i{0};i<N;++i)for(const auto j:H)A[c++]=j;
  write(1,A,L*N);
}