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- public static void main(String[] args) {
- Scanner sc=new Scanner(System.in);
- int n=sc.nextInt();
- boolean w=false;
- int[] mass=new int[n];
- for(int i=0;i<n;i++){
- mass[i]=sc.nextInt();
- }
- int j=0, r=0;
- for(int i=1;i<n;i++){
- while(mass[i]==mass[j]){
- if(j==0)r=i;
- if(j==r-1 && i==n-1){w=true; break;}
- i++;
- j++;
- if(i>=n)break;
- }
- }
- System.out.println(w);
- sc.close();
- }
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