something c =
{
    {123, {1,2,3,4,5,5}},
    {333, {1,2,4}},
    {13}, {6,3,1,2,3,4,5,6,7,7,8}}
    // continue for 100 lines
};

HashMap<Integer, Integer[]> something =
{
    123:{1,2,3,4,5,5},
    333:{1,2,4},
    //continue for 100 lines
}