38 lines
461 B
D
38 lines
461 B
D
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import std.algorithm;
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import std.uni;
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import std.array;
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import std.file;
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import std.stdio;
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void main()
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{
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readText("input").calculateTotalNumberOfQuestions.writeln;
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}
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auto calculateTotalNumberOfQuestions(string input)
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{
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return input.splitter("\n\n")
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.array.map!(group => group.filter!isAlpha.array.sort.uniq.count).sum;
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}
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unittest
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{
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auto input = `abc
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a
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b
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c
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ab
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ac
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a
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a
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a
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a
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b`;
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assert(input.calculateTotalNumberOfQuestions == 11);
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}
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