#include <stdio.h>
int main(void)
{
  int n;
  scanf("%d", &n);
  switch(n)
  {
  case 12:
  case 1:
  case 2:
    puts("winter");
    break;
  case 3:
  case 4:
  case 5:
    puts("spring");
    break;
  case 6:
  case 7:
  case 8:
    puts("summer");
    break;
  case 9:
  case 10:
  case 11:
    puts("fall");
    break;
  }
  return 0;
}