#include<stdio.h>
#include<string.h>
#include<ctype.h>
int main()
{
    int n,i,m,i1,i2,h;
    scanf("%d",&n);
    char a[n],s1[20],s2[20];
    char sub[20];
    scanf("%s",a);
    m=n-1;
    
    printf("%d",m);
    for(i=0;i<n;i++)
    {
        s1[i]=a[i];
        s2[i]=a[m];
         sub[i]=strcat(s1],s2);
         h=strlen(sub);
         
         
    }
}