#include<bits/stdc++.h> using namespace std; int main(){ string a; int q=0; cin>>a; for(int i=0;i<=a.size();i++){ if(a[i]==a[i+2] || a[i]==a[i+3] && a[i+1]==a[i+2]){ cout<<"Yes"; q=1; break; } } if(q==0){ cout<<"No"; } return 0; }