fork download
copy 
  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main(){
  4. 	long long n; cin >> n;
  5. 	vector<long long> v;
  6. 	for(long long i=0;i<n-1;i++){
  7. 		long long t;
  8. 		cin >> t;
  9. 		v.push_back(t);
  10. 	}
  11. 	sort(v.begin(),v.end());
  12. 	for(long long i=0;i<n;i++){
  13. 		if(v[i] != i+1){
  14. 			cout << i+1;
  15. 			break;
  16. 		}
  17. 	}
  18. 	return 0;
  19. }
Success #stdin #stdout 0.01s 5384KB
comments (?)
stdin
copy 
2
1
stdout
copy 
2
https://ideone.com/CTLVUG
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!