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  1. import java.io.BufferedReader;
  2. import java.io.InputStreamReader;
  3.  
  4. class Main
  5. {
  6. 	public static void main (String[] args) throws java.lang.Exception
  7. 	{
  8. 		BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
  9. 		String p = bufferedReader.readLine();
  10. 		long s=0;
  11. 		long[] x= {0,0,0,0,0,0,0,0,0,0};
  12. 		for(int i = 0; i < p.length(); i++) {
  13. 			char n = p.charAt(i);
  14. 			if(n =='0') x[0]++;
  15. 			else if(n =='1') x[1]++;
  16. 			else if(n =='2') x[2]++;
  17. 			else if(n =='3') x[3]++;
  18. 			else if(n =='4') x[4]++;
  19. 			else if(n =='5') x[5]++;
  20. 			else if(n =='6') x[6]++;
  21. 			else if(n =='7') x[7]++;
  22. 			else if(n =='8') x[8]++;
  23. 			else if(n =='9') x[9]++;
  24. 		}
  25. 		for(int i = 0; i < 10; i++)
  26. 			if (x[i]>1) s+=x[i]/2;
  27. 		System.out.print(s);
  28. 	}
  29. }
Success #stdin #stdout 0.05s 2184192KB
comments (?)
stdin
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8 7 7 5 4 3 5 4 8
stdout
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4
https://ideone.com/Ag6Hgd
7809
language:
Java (12.0.1)
created:
6 years ago
visibility:
secret

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