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  1. #include <iostream>
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	// your code goes here
  7. 	int t;
  8. 	cin>>t;
  9. 	while(t--){
  10. 		int n,k;
  11. 		cin>>n>>k;;
  12. 		int a[n];
  13. 		for(int i=0;i<n;i++){
  14. 			cin>>a[i];
  15. 		}
  16.  
  17.         int fre[n] = {0};
  18. 		int j =0;
  19.  
  20. 		int diff = 0;
  21. 		int maxx = 0;
  22. 		for(int i=0;i<n;i++) {
  23. 			if(k==1){
  24. 				break;
  25. 			}
  26.  
  27. 		    fre[a[i]]++;
  28.  
  29. 			if( fre[a[i]] == 1) diff++;
  30. 			   while(diff >= k) {
  31. 			 	fre[a[j]]--;
  32. 			  	 if(	fre[a[j]] == 0){
  33. 			 		diff--;
  34. 			 	 }
  35. 			 	 j++;
  36. 			 }
  37.  
  38. 		     maxx  = max(i-j+1,maxx);
  39. 		}
  40.  
  41. 			cout<<maxx<<endl;
  42. 	}
  43. 	return 0;
  44. }
Success #stdin #stdout 0s 4332KB
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stdin
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2
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stdout
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https://ideone.com/17qCbL
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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