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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		Scanner in = new Scanner(System.in);
  10. 		double S=0, m, n;
  11. 		m=in.nextInt();
  12. 		n=in.nextInt();
  13. 		for(int i=1;i<=m;i++){
  14.     			for(int j=1;j<=n;j++){
  15.         				S+=1.0/(i+j*j);
  16.     			}
  17.     		}
  18.     		System.out.print(S);
  19.     	}
  20. }
Success #stdin #stdout 0.07s 4386816KB
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stdin
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40 20
stdout
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13.64583168244551
https://ideone.com/oxnFdL
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
secret

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