#include <stdio.h>
#include <string.h>

int main () {
  char s[12] = "";
  char t[12] = "";
  
  int res = 0;
  
  char *ans[3] = { "watermelon", "beachball", "shrinebell" };
  int idx = 0;
  
  res = scanf("%s", s);
  res = scanf("%s", t);
  
  while (idx < 3) {
    if (strcmp(s, ans[idx]) != 0 && strcmp(t, ans[idx]) != 0) {
      printf("%s\n", ans[idx]);
      return 0;
    }
    idx++;
  }
  
  return -1;
}