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SRM · Problem 17818

ThreeFractions

Problem statement, definition, constraints, and public examples.

Problem Statement

We have two fractions: a smaller fraction N1 / D1 and a bigger fraction N2 / D2.

Your task is to find three more fractions: A/B, C/D, and E/F.

These three fractions must have three distinct values, and they must all lie strictly between N1 / D1 and N2 / D2.

All values A, B, C, D, E, F must be integers between 1 and 10^9, inclusive.

Return the int[] {A, B, C, D, E, F}. All valid solutions will be accepted.

Definition

Class:
ThreeFractions
Method:
find
Parameters:
int, int, int, int
Returns:
int[]
Method signature:
int[] find(int N1, int D1, int N2, int D2)
(be sure your method is public)

Constraints

  • Each number in the input will be between 1 and 5000, inclusive.
  • The value of N1 / D1 will be strictly smaller than the value of N2 / D2.

Examples

  1. 1
    3
    2
    3
    Returns: {1, 2, 3, 5, 147, 233 }
    We are looking for three fractions between 1/3 and 2/3. The three returned fractions are 1/2 = 0.5, 3/5 = 0.6, and 147/233 = approximately 0.631.
  2. 1
    7
    7
    1
    Returns: {2, 1, 5, 1, 3, 1 }
    We are looking for three fractions between 1/7 and 7/1. The three returned fractions are 2/1, 5/1, and 3/1.
  3. 2
    3
    3
    4
    Returns: {7, 10, 71, 100, 47, 69 }
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