Be the largest integer divisible by 15, given a contains only numbers (0 .. 9), string, requiring use of certain characters in the string, one can construct the largest integer divisible by 15, note that each string characters can only be applied once. Input: program read from standard input data, each row of data from the string of numbers, a length of 1 to 1000. Output: for each line of input, output a result of the row for each result, if you can not divisible by 15 is constructed to chant integer, please output impossible

Program.cs
...perties\AssemblyInfo.cs
dev_by15.csproj
dev_by15.sln
dev_by15.suo

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