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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_set<int>st;
  6. 	for(int x:a){
  7. 		st.insert(x);
  8. 	}
  9. 	for(int x:b){
  10. 		if(st.find(x)==st.end()){
  11. 			return false;
  12. 		}
  13. 	}
  14. 	return true;
  15. }
  16.  
  17. int main() {
  18. 	int n;
  19. 	cin>>n;
  20. 	vector<int>arr(n);
  21. 	for(int i=0;i<n;i++){
  22. 		cin>>arr[i];
  23. 	}
  24.  
  25. 	int m;
  26. 	cin>>m;
  27. 	vector<int>brr(m);
  28. 	for(int i=0;i<m;i++){
  29. 		cin>>brr[i];
  30. 	}
  31. 	if(checkSubset(arr,brr)){
  32. 		cout<<"Array2 is subset of Array1."<<endl;
  33. 		return 0;
  34. 	}
  35. 	else{
  36. 		cout<<"Not a subset.";
  37. 	}
  38. 	return 0;
  39. }
Success #stdin #stdout 0.01s 5288KB
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stdin
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5
2 4 7 1 5
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stdout
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Array2 is subset of Array1.
https://ideone.com/aeZ0g6
language:
C++ (gcc 8.3)
created:
38 days ago
visibility:
public

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