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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Main
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		Scanner in = new Scanner(System.in);
  10. 		int n = in.nextInt();
  11. 		int[][] x = new int[n][n];
  12. 		for(int i = 0; i < n; i++) {
  13. 			for(int j = 0; j < n; j++) {
  14. 				x[i][j] = in.nextInt();
  15. 			}
  16. 		}
  17. 		int roads = 0;
  18. 		for(int i = 0; i < n; i++) {
  19. 			for(int j = i; j < n; j++) {
  20. 				if(x[i][j] == 1) roads++;
  21. 			}
  22. 		}
  23. 		System.out.print(roads);
  24. 	}
  25. }
  26.  
Runtime error #stdin #stdout #stderr 0.06s 2184192KB
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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.util.Scanner.throwFor(Scanner.java:862)
	at java.util.Scanner.next(Scanner.java:1485)
	at java.util.Scanner.nextInt(Scanner.java:2117)
	at java.util.Scanner.nextInt(Scanner.java:2076)
	at Main.main(Main.java:10)
https://ideone.com/ZI5tyN
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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