a.cpp

#include<iostream>
#include<cstring>
using namespace std;

int main()
{
  const int MAX= 1000*1001/2;
  bool prime[MAX+1];
  memset(prime,true,sizeof(prime));
  prime[0]=prime[1]=false;
  for(int i=2;i<=MAX;i++)
    {
      if(prime[i])
        for(int j=i+i;j<=MAX;j+=i)
          prime[j]=false;
    }

  int n;
  cin>>n;
  if(prime[n*(n+1)/2])
    cout<<"WANWAN"<<endl;
  else
    cout<<"BOWWOW"<<endl;
}