fork(1) download
copy 
  1. import java.util.*;
  2. class M{
  3.   static String c(int i){
  4.     if(i <= 0){
  5.       return "";
  6.     }
  7.     ArrayList<Long> r = f(1),
  8.                     s = f(3),
  9.                     t = f(9),
  10.                     x = f(i);
  11.     String z = "first meets river ",
  12.            y = " at ";
  13.     for(int j = 0; j < r.size(); j++){
  14.       long u = r.get(j),
  15.            v = s.get(j),
  16.            w = t.get(j);
  17.       if(x.contains(u)){
  18.         return z+1+y+u;
  19.       }
  20.       if(x.contains(v)){
  21.         return z+3+y+v;
  22.       }
  23.       if(x.contains(w)){
  24.         return z+9+y+w;
  25.       }
  26.     }
  27.     return "";
  28.   }
  29.  
  30.   static ArrayList f(long i){
  31.     ArrayList<Long> l = new ArrayList();
  32.     l.add(i);
  33.     for(long j = 0, x; j < 9e4; j++){
  34.       x = l.get(l.size() - 1);
  35.       for(char c : (x+"").toCharArray()){
  36.         x += new Long(c+"");
  37.       }
  38.       l.add(x);
  39.       if(x > 16383){
  40.         return l;
  41.       }
  42.     }
  43.     return l;
  44.   }
  45.  
  46.   public static void main(String[] a){
  47.     System.out.println(c(86));
  48.     System.out.println(c(12345));
  49.     System.out.println(c(0));
  50.   }
  51. }
Success #stdin #stdout 0.05s 711168KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
first meets river 1 at 101
first meets river 3 at 12423
https://ideone.com/qLPzHw
language:
Java (12.0.1)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!