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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. bool checkSubset(vector<int>a , vector<int>b){
  5. 	unordered_map<int,int>mpp;
  6. 	for(int x:a){
  7. 		mpp[x]++;
  8. 	}
  9. 	for(int x:b){
  10. 		if(mpp.find(x)==mpp.end()){
  11. 			return false;
  12. 		}
  13. 		mpp[x]--;
  14. 		if(mpp[x]==0)mpp.erase(x);
  15. 	}
  16. 	return true;
  17. }
  18.  
  19. int main() {
  20. 	int n;
  21. 	cin>>n;
  22. 	vector<int>arr(n);
  23. 	for(int i=0;i<n;i++){
  24. 		cin>>arr[i];
  25. 	}
  26.  
  27. 	int m;
  28. 	cin>>m;
  29. 	vector<int>brr(m);
  30. 	for(int i=0;i<m;i++){
  31. 		cin>>brr[i];
  32. 	}
  33. 	if(checkSubset(arr,brr)){
  34. 		cout<<"Array2 is subset of Array1."<<endl;
  35. 		return 0;
  36. 	}
  37. 	else{
  38. 		cout<<"Not a subset.";
  39. 	}
  40. 	return 0;
  41. }
Success #stdin #stdout 0.01s 5272KB
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Not a subset.
https://ideone.com/0uqV5U
language:
C++ (gcc 8.3)
created:
40 days ago
visibility:
public

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