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  1. /* package whatever; // don't place package name! */
  2.  
  3. class Main{
  4.   static int c = 1;
  5.   static String c(long a, long b, int o){
  6.     return p((o < 1 ? a+b : a*b) + "", o) + "," + c;
  7.   }
  8.  
  9.   static long p(String n, int o){
  10.     long x = o,
  11.          q;
  12.     for(String s : n.split("")){
  13.       q = new Long(s);
  14.       x = o < 1
  15.            ? x + q
  16.            : x * q;
  17.     }
  18.     c++;
  19.     return x < 10
  20.             ? x
  21.             : p(x+"", o);
  22.   }
  23.  
  24.   public static void main(String[] a){
  25.     System.out.println(c(81, 31, 0));
  26.     c = 1;
  27.     System.out.println(c(351, 14568, 0));
  28.     c = 1;
  29.     System.out.println(c(21, 111, 1));
  30.     c = 1;
  31.     System.out.println(c(136, 2356, 1));
  32.   }
  33. }
Success #stdin #stdout 0.04s 711168KB
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Standard input is empty
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4,2
6,3
8,3
0,2
https://ideone.com/bw0D5Y
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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