#include <bits/stdc++.h>
using namespace std;
int main() {
  int m, e[10][10] = {}, a, b;
  scanf("%d", &m);
  while (m--) {
    scanf("%d%d", &a, &b);
    e[a][b] = e[b][a] = 1;
  }
  for (int i = 1; i <= 5; i++)
    for (int j = i + 1; j <= 5; j++)
      for (int k = j + 1; k <= 5; k++)
        if (e[i][j] == e[j][k] && e[j][k] == e[k][i]) {
          puts("WIN");
          return 0;
        }
  puts("FAIL");
  return 0;
}
