/* Sample solution to the babybites problem in NCPC2018 by Andreas Björklund */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
  int ok = 1;
  int cnt = 1, n;
  char wrd[10];
  scanf("%d",&n);
  while (n--) {
    scanf("%s",wrd);
    if (strcmp(wrd,"mumble"))
        ok &= cnt == atoi(wrd);
    cnt++;
  }
  if (ok) printf("makes sense\n"); else printf("something is fishy\n");
}