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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. int N;
  6. 	cin >> N;
  7. 	int arr[N+1]={};
  8. 	int K;
  9. 	while(cin >>K){
  10. 		arr[K]=1;
  11. 	}
  12. 	for(int i=N;i>=1;i--){
  13. 		if(arr[i]==0){
  14. 			cout << "No. " << i << '\n';
  15. 		}
  16. 	}
  17. }
Success #stdin #stdout 0s 5288KB
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stdin
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5
3 4 5
stdout
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No. 2
No. 1
https://ideone.com/j6nCiO
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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