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  1. import java.util.*;
  2. import java.io.*;
  3.  
  4. public class Main
  5. {
  6. 	public static void main(String[] args) {
  7. 		Scanner sc = new Scanner(System.in);
  8. 		int n=sc.nextInt();
  9. 		int[]a = new int[n];
  10. 		for(int i=0;i<n;i++){
  11. 		    a[i]=sc.nextInt();
  12. 		}
  13.  
  14. 		int[]b = new int[n];
  15. 		for(int i=0;i<n;i++){
  16. 		    b[i]=sc.nextInt();
  17. 		}
  18.  
  19. 		int[]c = new int[n];
  20. 		for(int i=0;i<n;i++){
  21. 		    c[i]=sc.nextInt();
  22. 		}
  23.  
  24. 		int[]d = new int[n];
  25. 		for(int i=0;i<n;i++){
  26. 		    d[i]=sc.nextInt();
  27. 		}
  28.  
  29.         HashMap<Integer,Integer>h = new HashMap<>();
  30. 		int sum=0;
  31. 		for(int i=0;i<n;i++){
  32. 		    for(int j=0;j<n;j++){
  33. 		        sum =c[i]+d[j];
  34. 		        h.put(sum,h.getOrDefault(sum,0)+1);
  35. 		        sum=0;
  36. 		    }
  37. 		}
  38.  
  39. 		int count=0;
  40.  
  41. 		for(int i=0;i<n;i++){
  42. 		    for(int j=0;j<n;j++){
  43. 		        int summ=-(a[i]+b[j]);
  44. 		        if(h.containsKey(summ)){
  45. 		            count+=h.get(summ);
  46. 		        }
  47. 		    }
  48. 		}
  49. 		System.out.print(count);
  50. 	}
  51. }
Runtime error #stdin #stdout #stderr 0.11s 54588KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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Exception in thread "main" java.util.NoSuchElementException
	at java.base/java.util.Scanner.throwFor(Scanner.java:937)
	at java.base/java.util.Scanner.next(Scanner.java:1594)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
	at Main.main(Main.java:8)
https://ideone.com/PEsikM
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

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