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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6. double a, b, an = 0;
  7. int n;
  8. scanf("%d", &n);
  9. for (int i = 0; i < n; i++)
  10. {
  11. if (scanf("%lf", &a) == EOF) break;
  12. b = a / (1 + ((a + an) * (a + an)));//Считаем форумулу
  13. printf("\n%3.2lf %3.3lf", a, b);
  14. an = a + an; // Запоминаем сумму
  15.  
  16. }
  17. return 0;
  18. }
Success #stdin #stdout 0s 3300KB
stdin
10 4.5 3.1 6.7 1.1 8.9 4.32 1.45 5.1 4.5 8.1

stdout
4.50 0.212
3.10 0.053
6.70 0.033
1.10 0.005
8.90 0.015
4.32 0.005
1.45 0.002
5.10 0.004
4.50 0.003
8.10 0.004