#include <bits/stdc++.h> ? using namespace std; int main() { string s1,s2; cin>>s1>>s2; int len1 = s1.size(); int len2 = s2.size(); for(int i=0;i<len1;i++){ if(s1[i]==s2[0]){ for(int j=1;j<len2;j++){ if(s1[i+j] != s2[j]){ break; } if(j==len2-1){ cout<<"yes"; return 0; } } } } cout<<"no"; return 0; }