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