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  1. import java.util.*;
  2. public class Main {
  3.     public static void main(String[] args) {
  4.         Scanner sc = new Scanner(System.in);
  5.         int n = sc.nextInt();
  6.         String answer = "YES";
  7.         short[][] graph = new short [n][n];
  8.         for (int i = 0; i < n; i++) {
  9.             for( int j = 0; j < n; j++) {
  10.                 graph[i][j] = sc.nextShort();
  11.             }
  12.         }
  13.         for(int i = 0; i < n; i++){
  14.             for(int j = 0; j < n; j++){
  15.                 if (graph[i][j] == 1){ 
  16.                     for (int z = 0; z < n; z++){
  17.                         if (graph[j][z] == 1 && graph[i][z] == 0) { 
  18.                             answer = "NO";
  19.                             break;
  20.                         }   
  21.                     }   
  22.                 }
  23.             }
  24.         }
  25.     System.out.print(answer);
  26.     }
  27.  
  28. }
  29.  
Runtime error #stdin #stdout #stderr 0.07s 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:5)
https://ideone.com/o37b5g
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
secret

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