#include "stdio.h"
#include "string.h"
int main()
{
int k, len1,len2, i, j, km1,km2;
char str1[100002], str2[100002];
while(scanf("%s %s",str1,str2)!=EOF)
{
k=0;
len1=strlen(str1);
len2=strlen(str2);
if(len1<len2) printf("no/n");
else
{
while(k<=len1-1)
{
km1=k;
km2=0;
while(str1[km1]==str2[km2]&&str2[km2])
{
km1++;km2++;
if(km1>len1-1) km1=0;
}
if(!str2[km2])
{printf("yes/n");break; }
else k++;
}
if(k>len1-1) printf("no/n");
}
}
return 0;
}