fork download
copy 
  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main(){
  5. 	int t,n;	cin >> t;
  6. 	while(t--){
  7. 		cin >> n;
  8. 		if(n == 2)	cout << "1\n";
  9. 		else if(n == 3)	cout << "7\n";
  10. 		else{
  11. 			map<int,int> mp = {{2,1},{3,7},{4,4},{5,5},{6,9},{7,8}};
  12.  
  13. 			int dcount = n/2;
  14. 			string ans = "";
  15. 			for(int i=0;i<dcount-1;++i){
  16. 				ans = "1" + ans;
  17. 				n -= 2;
  18. 			}
  19. 			cout << mp[n] << ans << endl;
  20. 		}
  21. 	}
  22. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
copy 
2
3
4
stdout
copy 
7
11
https://ideone.com/VkvgI3
language:
C++14 (clang 8.0)
created:
21 hours 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!