#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <stdio.h>
#include <cstring>
#include <queue>
#include <stack>
#include <functional>
#include <math.h>
using namespace std;
#define Would
#define you

int w, e;
int main() {
	string h, ans;
	cin >> h;
	for (int i = 0; i < h.length(); ++i) {
		if (h[i] == 'O') { ++w; }
		else { ++e; }
	}
	if (w == e) { ans = "NA"; }
	else if (w > e) { ans = "West"; }
	else { ans = "East"; }
	cout << ans << endl;
}