
int main()
{
  int w,a,b;
  scanf("%d",&w);
  a=w+12;
  b=a%7;
  if(b==5)
  printf("1\n");
  
  a=b+31;
  b=a%7;
  if(b==5)
  printf("2\n");
  
  a=b+28;
  b=a%7;
  if(b==5)
  printf("3\n");
  
  a=b+31;
  b=a%7;
  if(b==5)
  printf("4\n");
  
  a=b+30;
  b=a%7;
  if(b==5)
  printf("5\n");
  
  a=b+31;
  b=a%7;
  if(b==5)
  printf("6\n");
  
  a=b+30;
  b=a%7;
  if(b==5)
  printf("7\n");
  
  a=b+31;
  b=a%7;
  if(b==5)
  printf("8\n");
  
  a=b+31;
  b=a%7;
  if(b==5)
  printf("9\n");
  
  a=b+30;
  b=a%7;
  if(b==5)
  printf("10\n");
  
  a=b+31;
  b=a%7;
  if(b==5)
  printf("11\n");
  
  a=b+30;
  b=a%7;
  if(b==5)
  printf("12\n");
  

}