题目描述：
要开运动会了，神犇学校的n个班级要选班服，班服共有100种样式，编号1~100。现在每个班都挑出了一些样式待选，每个班最多有100个待选的样式。要求每个班最终选定一种样式作为班服，且该班的样式不能与其他班级的相同，求所有可能方案的总数，由于方案总数可能很大，所以要求输出mod 1000000007后的答案。
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uncle-lu
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机房dalao
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Do not go gentle into that good night
Old age should burn and rave at close of day;
Rage, rage against the dying of the light.Though wise men at their end know dark is right,
Because their words had forked no lightning they
Do not go gentle into that good night.Good men, the last wave by, crying how bright
Their frail deeds might have danced in a green bay,
Rage, rage against the dying of the light.Wild men who caught and sang the sun in flight,
And learn, too late, they grieved it on its way,
Do not go gentle into that good night.Grave men, near death, who see with blinding sight
Blind eyes could blaze like meteors and be gay,
Rage, rage against the dying of the light.And you, my father, there on the sad height,
Curse, bless me now with your fierce tears, I pray.
Do not go gentle into that good night.
Rage, rage against the dying of the light. -
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