#include <stdio.h>
#include <stdbool.h>

typedef struct {
  int flag;
  int cnt;
} flagInfo;

void check_flag(flagInfo *p);

int main(void)
{
  bool isFound = false;
  flagInfo data;

  while (~scanf("%d", &data.flag))
  {
    check_flag(&data);

    if (data.cnt > 2) {
      isFound = true;
      printf("DEAD\n");
      break;
    }
  }
  if (isFound == false)
    printf("SUREVIVED\n");
  return 0;
}

void check_flag(flagInfo *data)
{
  data->cnt = 0;

  if (data->flag == 1)
    data->cnt++;
  else
    data->cnt = 0;
}