#include <stdio.h>
struct DATE_DATA
{
 int yy;
 int mm;
 int dd;
};

int main(void)
{
 struct DATE_DATA x [5] =
 {
  {88, 11, 9},
  {60, 4, 1},
  {61, 3, 1},
  {91, 8, 18},
  {87, 9, 19}
 };
 int i;

 while (1) {
  printf("input 0-4\n");
  scanf("%d", &i);
  if (i < 0) break;
  if (4 < i) continue;
  printf("%02d/", x[i].yy);
  printf("%02d/", x[i].mm);
  printf("%02d\n", x[i].dd);
 }

 return 0;
}