Submission #23410179

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Source Code Expand

import java.util.*;
import java.io.*;

public class Main{ 
  public static void main(String[] args) throws IOException {
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

    int n = Integer.parseInt(in.readLine());
    String[] inputs = in.readLine().split(" ");
    boolean[] used = new boolean[n];
    for (int i = 0; i < n; i++) {
      int a = Integer.parseInt(inputs[i]);
      if (used[a-1]) {
        System.out.println("No");
        System.exit(0);
      } else {
        used[a-1] = true;
      }
    }
    System.out.println("Yes");
  }
}

Submission Info

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