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Rational Resistance question(doubt)
By DCSekhara, history, 5 years ago, In English

Can someone help me with this question [](https://codeforces.net/contest/344/problem/C) I am able to solve the question but... in the question, it is said to minimize the number of resistors used. whereas I feel that there is only one unique way to build the given resistance. am I wrong?

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5 years ago, # |
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Write you words in lowercase letters, please.

Abusing UPPERCASE letters makes other people think you are angry or excited.

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    5 years ago, # ^ |
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    Maybe he's angry because of not getting AC, and maybe he's also excited to find out where the mistake is.. ;)

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5 years ago, # |
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Auto comment: topic has been updated by DCSekhara (previous revision, new revision, compare).

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5 years ago, # |
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Auto comment: topic has been updated by DCSekhara (previous revision, new revision, compare).

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5 years ago, # |
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someone respond!!

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5 years ago, # |
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Resistance of value 1 can be built by taking 4 resistors too.(Consider an element having two resistors in series, and connect two of these elements in parallel)

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    5 years ago, # ^ |
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    I think that is not allowed in the question because question saays that the ways of constructing resistance as

    an element and one resistor plugged in sequence; an element and one resistor plugged in parallel.

    and also for r=6/5 , answer the judge accepted is 6(if we don't consider element linked to another element ) and not 5(if we consider an element can be linked to another element )

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      5 years ago, # ^ |
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      Sorry for not reading the question correctly. Yes, there is only a unique way of constructing the given resistance.

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5 years ago, # |
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No. It's not unique.

Eg.: n 1 ohm resistors in series will behave like 2n 1/2 ohm components where each component is made up of 2 1 ohm resistors in parallel.

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