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  1.  
  2. import java.io.*;
  3. import java.util.*;
  4. import java.math.*;
  5. import static java.lang.Math.*;
  6. import static java.lang.Integer.parseInt;
  7. import static java.lang.Long.parseLong;
  8. import static java.lang.Double.parseDouble;
  9. import static java.lang.String.*;
  10.  
  11. public class Main {
  12.  
  13.     public static void main(String[] args) throws IOException {
  14.         BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
  15.         StringBuilder out = new StringBuilder();
  16.         StringTokenizer tk;
  17.  
  18.         int n,l,r,x;
  19.         tk = new StringTokenizer(in.readLine());
  20.         n = parseInt(tk.nextToken());
  21.         l = parseInt(tk.nextToken());
  22.         r = parseInt(tk.nextToken());
  23.         x = parseInt(tk.nextToken());
  24.  
  25.         int [] c = new int[n];
  26.         tk = new StringTokenizer(in.readLine());
  27.         for(int i=0; i<n; i++)
  28.             c[i] = parseInt(tk.nextToken());
  29.  
  30.         int ans = 0;
  31.         for(int m=0; m<(1<<n); m++) {
  32.             int mn = Integer.MAX_VALUE,mx = Integer.MIN_VALUE,cnt = 0,sum = 0;
  33.             for(int i=0; i<n; i++) {
  34.                 if((m & (1<<i))!=0) {
  35.                     cnt++;
  36.                     sum += c[i];
  37.                     mn = min(mn, c[i]);
  38.                     mx = max(mx, c[i]);
  39.                 }
  40.             }
  41.  
  42.             if(mx-mn >= x && sum>=l && sum<=r && cnt>=2) ans++;
  43.         }
  44.  
  45.         System.out.println(ans);
  46.  
  47.     }
  48.  
  49. }
Runtime error #stdin #stdout #stderr 0.09s 27820KB
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stdin
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stdout
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Standard output is empty
stderr
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Exception in thread "main" java.util.NoSuchElementException
	at java.util.StringTokenizer.nextToken(StringTokenizer.java:349)
	at Main.main(Main.java:21)
https://ideone.com/N0rlnF
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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