#include <bits/stdc++.h>
using namespace std;
int main() {
int arr[]= {3,1,2,3,2};
int n=sizeof(arr)/sizeof(arr[0]);
int k=2;
bool flag=false;
for(int i=0;i<n;i++){
for(int j=i+1;j<n;j++){
if(arr[i]==arr[j]){
if(j-i<=k)
flag=true;
}
}
}
if(flag)
cout<<"yes";
else
cout<<"no";
return 0;
}
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