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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long
  4.  
  5.  
  6. void solve()
  7. {
  8.     int n; cin >> n;
  9.     string s[n];
  10.     for (int i = 0; i < n; ++i)
  11.         cin >> s[i];
  12.     int idx[n];
  13.     for (int i = 0; i < n; ++i)
  14.         idx[i] = i;
  15.     sort(idx, idx+n, [&](int i, int j)->bool
  16.     {
  17.         return s[i] + s[j] < s[j] + s[i];
  18.     });
  19.     for (int i = 0; i < n; ++i)
  20.         cout << s[idx[i]];
  21. }
  22.  
  23. int main()
  24. {
  25. #ifndef ONLINE_JUDGE
  26.     freopen("input.txt", "r", stdin);
  27.     freopen("output.txt", "w", stdout);
  28.     freopen("Errors.txt", "w", stderr);
  29. #endif
  30.     ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
  31.     int t = 1;
  32.     // cin >> t;
  33.     while (t--)
  34.     {
  35.         solve();
  36.         if (t) cout << '\n';
  37.     }
  38.     cout << '\n';
  39.     return 0;
  40. }
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin 
Standard input is empty
stdout 

	

		
	 
	
	
			

					
			
			
			
			
			
			
			
			

			
			
			
		

	
		
		

			


			                        
			
			

				

	
					
					 https://ideone.com/J4gA42
					
					
					
					
					

												

												
						
						

					

					
					
					

						
language:

						
C++14 (gcc 8.3)

					

					

						
created:
								
						
18 days ago

					

					

						
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