- import java.util.*; 
- import java.lang.*; 
- import java.io.*; 
-   
- class Ideone 
- { 
- 	{ 
- 		Scanner in  = new-  Scanner (System- . in);
- 		double x,n,s=0; 
- 		n=in.nextDouble(); 
- 		x=in.nextDouble(); 
- 		for (int i=0; i<n; i++){ 
- 		} 
- 		System- . out- . printf("S = %f"- ,s );
 
- 	} 
- } 
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