#include <iostream> #include <cstring> using namespace std; int main() { char s[1010]; cin>>s; int len=strlen(s); bool ok=false; for(int i=0;i<len;i++) { if(i+1<len&&s[i]==s[i+1]) { ok=true; break; } if(i+2<len&&s[i]==s[i+2]) { ok=true; break; } } cout<<(ok?"Yes":"No")<<endl; return 0; }