#include<stdio.h>
main()
{
	int month;
	scanf("%d",&month);
	switch(month)
{
      case 12: 
      case 1: 
      case 2: printf("¶¬¼¾\n"); break; 
      case 3: 
      case 4: 
      case 5: printf("´º¼¾\n"); break; 
      case 6: 
      case 7: 
      case 8: printf ("ÏÄ¼¾\n"); break; 
      case 9: 
      case 10: 
      case 11: printf ("Çï¼¾\n");  break; 
      default: 	printf ("error\n"); 
	}
}
