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@ -1,8 +1,25 @@
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import java.io.*;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.OutputStreamWriter;
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import java.nio.charset.Charset;
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import java.nio.file.*;
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import java.nio.file.Files;
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import java.nio.file.Paths;
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import java.text.SimpleDateFormat;
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import java.util.*;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Random;
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import java.util.Set;
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/**
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* 中小学数学卷子自动生成程序
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