#include <iostream>
#include <algorithm>
#include <cstring>
#include <string>
#include <vector>
#include <queue>
#include <deque>
#include <cmath>

#define AS(a) (sizeof(a)/sizeof(a[0]))
using namespace std;
long long int MOD = 1000000007;
long long int INF = 1000000007;


int main() {
  int a = 0;
  int b = 0;
  string S;
  cin >> S;
  for(int i = 0; i < S.length(); i++) {
    if(S[i] == 'O')a++;
    else b++;
  }
  if(a < b) cout << "West" << endl;
  else if(a > b) cout << "East" << endl;
  else cout << "NA" << endl;
}