#include <bits/stdc++.h>
int main() {
  const char *KEY1[7] = {"k",     "ke",     "key",    "keye",
                         "keyen", "keyenc", "keyence"};
  const char *KEY2[7] = {"eyence", "yence", "ence", "nce", "ce", "e", ""};
  char s[100];
  char *pt;
  char *pt2;
  char *pt3;
  int i;
  int num;
  scanf("%s", s);
  pt3 = s;
  num = 0;
  while (1) {
    if (0 == strlen(pt3)) break;
    if (0 == (pt = strstr(pt3, KEY1[num]))) {
      printf("NO\n");
      return 0;
    }
    if (0 == (pt = strstr(pt3, KEY2[num]))) {
      num++;
      if (num >= 7) {
        printf("NO\n");
        return 0;
      }
    } else {
      printf("YES\n");
      return 0;
    }
  }
}
