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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4. import java.math.*;
  5.  
  6. class Ideone
  7. {
  8. 	public static double c_price(double p, double p1, double s1, double p2, double s2){
  9. 		if(p1 == p2){ //if given solutions' concentrations are equal
  10. 			return p1 == p ? Math.min(s1, s2) : 0;
  11. 		}
  12. 		if(p1 == p || p2 == p){	//if some given concentration equals to needed
  13. 			return p1 == p ? s1 : s2;
  14. 		}
  15. 		double a1 = (p-p1)/(p2-p1);
  16. 		if(a1 > 1 || a1 < 0) return 0; //inconsistent data
  17. 		double a2 = 1-a1;
  18. 		return s1*a1 + s2*a2;
  19. 	}
  20. 	public static void main (String[] args) throws java.lang.Exception
  21. 	{
  22. 		Scanner in = new Scanner(System.in);
  23. 		double[] p = new double[3]; 
  24. 		double[] s = new double[3];
  25. 		for(int i = 0; i < 3; i++) p[i] = in.nextDouble();
  26. 		double f_p = in.nextDouble();
  27. 		for(int i = 0; i < 3; i++) s[i] = in.nextDouble();
  28. 		double s12 = c_price(f_p, p[0], s[0], p[1], s[1]);
  29. 		double s13 = c_price(f_p, p[0], s[0], p[2], s[2]);
  30. 		double s23 = c_price(f_p, p[1], s[1], p[2], s[2]);
  31. 		if(s[0] == 0 && s[1] == 0 && s[2] == 0)
  32. 			System.out.println("Impossible");
  33. 		else{
  34. 			double min_price = s12;
  35. 			if(s13 != 0) min_price = Math.min(min_price, s13);
  36. 			if(s23 != 0) min_price = Math.min(min_price, s23);
  37. 			System.out.printf("%.2f", min_price);
  38. 		}
  39. 	}
  40. }
Success #stdin #stdout 0.16s 321344KB
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https://ideone.com/qTQpMX
Юркин 2.21
language:
Java (12.0.1)
created:
9 years ago
visibility:
public

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