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  1. import java.util.*;
  2.  
  3. public class Main {
  4. 	public static void main (String[] args) {
  5. 		Scanner sc = new Scanner(System.in);
  6. 		int n = sc.nextInt();
  7. 		Set<String> st = new HashSet<>();
  8. 		for(int i=0;i<n;i++){
  9. 			String t = sc.next();
  10. 			String c = sc.next();
  11. 			st.add(t+"/"+c);
  12. 		}
  13. 		System.out.println(st.size());
  14. 	}
  15. }
Success #stdin #stdout 0.14s 61028KB
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https://ideone.com/EWA4ng
language:
Java (HotSpot 12)
created:
45 days ago
visibility:
public

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