/*#include<stdio.h>
int main()
{
int i , n , h, m,s;
scanf("%d %d %d %d", &h,&m,&s,&n);
h=(h+(m+(s+n)/60)/60)%24;
m=(m+(s+n)/60)%60;
s=(s+n)%60;
printf("%d %d %d", h,m,s);
return 0;
}
*/
#include<stdio.h>
int main()
{
int n,j,i;
scanf("%d", &n);
(n-3)%12;
(n-4)%10;
printf("%d", n);
return 0;
}