replace list comprehension to regexp when checking validity (#71)
replace list comprehension to regexp when checking validity (#71)


kyuridenamida/atcoder-tools,kyuridenamida/ToolsForAtCoder,kyuridenamida/atcoder-tools,kyuridenamida/atcoder-tools,kyuridenamida/atcoder-tools,kyuridenamida/atcoder-tools,kyuridenamida/atcoder-tools,kyuridenamida/ToolsForAtCoder,kyuridenamida/atcoder-tools,kyuridenamida/atcoder-tools,kyuridenamida/atcoder-tools,kyuridenamida/atcoder-tools,kyuridenamida/atcoder-tools