#include <iostream> #include <cstring> using namespace std; int main() { char s[1005]; cin>>s; int len=strlen(s); bool flag=false; for(int i=0;i<len;i++) { if(i+1<len&&s[i]==s[i+1]) { flag=true; break; } if(i+2<len&&s[i]==s[i+2]) { flag=true; break; } } if(flag) cout<<"Yes"; else cout<<"No"; return 0; }