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  1. #include <iostream>
  2. #include <iomanip>  
  3. using namespace std;
  4.  
  5. int main() 
  6. {
  7. 	int m, n;
  8. 	cin >> m >> n;
  9. 	double a[m*n];
  10. 	double sum1 = 1, sum2 = 1, sum3 = 1;
  11. 	double sum = 0;
  12. 	for (int i = 1; i <= m*n; i++)
  13. 	{
  14. 		cin >> a[i];
  15. 		if (i <= m)
  16. 		{
  17. 			sum1 *= a[i];
  18. 		}
  19. 		if ((i > m) && (i <= 2*m))
  20. 		{
  21. 			sum2 *= a[i];
  22. 		}
  23. 		if ((i > (n - 1)*m) && (i <= n*m))
  24. 		{
  25. 			sum3 *= a[i];
  26. 		}
  27. 	}
  28. 	cout << setprecision(15) << sum1 + sum2 + sum3; 
  29. 	return 0;
  30. }
Success #stdin #stdout 0s 4516KB
comments (?)
stdin
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3 3
1.1342 2.82113 3.5431 4.541 5.081 6.761 7.35781 8.456451 9.6461 10.9321
stdout
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767.521890391178
https://ideone.com/O2FYRe
A321
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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