Source code for submission s612

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package fn;
 
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Scanner;
 
/**
 *
 * @author kuric10
 */
public class Main {
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
        // TODO code application logic here
    //    BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
        // String s=input.readLine();
  //      String pole[];
        int poc[] = new int[10001];
        //int spoje[][]
        int max;
        int prve;
        int druhe;
        int links;
        /* while(1==1){
         prve=input.read();
         input.read();
         druhe=input.read();
         input.read();
         }*/
 
        /*  while(!s.equals(null)){
         pole=s.split(" ");
         max=Integer.parseInt(pole[0]);//nebol bz lepsi scanner ??
         links=Integer.parseInt(pole[1]);
         for (int i = 0; i < links; i++) {
         s=input.readLine();
         pole
         }
            
         s=input.readLine();
         }*/
        Scanner in = new Scanner(System.in);
     //   ArrayList<int[]> a = new ArrayList<int[]>();
        int[] pomPole;
        int pom;
        boolean b;
        while (in.hasNextInt()) {
            b = false;
            max = in.nextInt();
            links = in.nextInt();
            // System.out.println(links);
            for (int i = 0; i < links; i++) {
                prve = in.nextInt();
                druhe = in.nextInt();
                if (prve > druhe) {
                    pom = prve;
                    prve = druhe;
                    druhe = pom;
                }
                pomPole = new int[2];
                pomPole[0] = prve;
                pomPole[1] = druhe;
                //
            //    if (!a.contains(i)) {
                    poc[prve]++;
                    poc[druhe]++;
                  //  a.add(pomPole);
                    if (poc[prve] == 4 || poc[druhe] == 4) {
                        b = true;
                        //break;
                    }
             //   }
            }
            if (b) {
                System.out.println("YES");
            } else {
                System.out.println("NO");
            }
            for (int i = 0; i < max + 1; i++) {
                poc[i] = 0;
            }
           // a.clear();
 
        }
    }
}
 

Diff to submission s604

--- c5.s604.cteam085.fn.java.0.Main.java
+++ c5.s612.cteam085.fn.java.0.Main.java
@@ -21,7 +21,7 @@
     public static void main(String[] args) throws Exception {
         // TODO code application logic here
-        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
+    //    BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
         // String s=input.readLine();
-        String pole[];
+  //      String pole[];
         int poc[] = new int[10001];
         //int spoje[][]
@@ -49,5 +49,5 @@
          }*/
         Scanner in = new Scanner(System.in);
-        ArrayList<int[]> a = new ArrayList<int[]>();
+     //   ArrayList<int[]> a = new ArrayList<int[]>();
         int[] pomPole;
         int pom;
@@ -70,13 +70,13 @@
                 pomPole[1] = druhe;
                 //
-                if (!a.contains(i)) {
+            //    if (!a.contains(i)) {
                     poc[prve]++;
                     poc[druhe]++;
-                    a.add(pomPole);
+                  //  a.add(pomPole);
                     if (poc[prve] == 4 || poc[druhe] == 4) {
                         b = true;
                         //break;
                     }
-                }
+             //   }
             }
             if (b) {
@@ -88,5 +88,5 @@
                 poc[i] = 0;
             }
-            a.clear();
+           // a.clear();
 
         }