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a guest Jan 25th, 2020 79 Never
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  1. import java.util.Scanner;
  2. public class ccc5j3s1_1 {
  3.     //https://dmoj.ca/problem/nccc5j5s3
  4.     public static void main(String[] args) {
  5.         Scanner sc = new Scanner(System.in);
  6.         //2D boolean map array
  7.         //LinkedList
  8.         //step
  9.        
  10.         int N = sc.nextInt(); //how many vertice
  11.         int M = sc.nextInt();
  12.         boolean[][] map = new boolean[N][N];
  13.         int[][] edge = new int[M][2];
  14.         for (int i=0; i<M; i++) {
  15.             int bv = sc.nextInt()-1;
  16.             int ev = sc.nextInt()-1;
  17.             map[bv][ev] = true;
  18.             edge[i][0] = bv;
  19.             edge[i][1] = ev;
  20.         }
  21.     }
  22. }
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