./Main.java:8: error: incompatible types: char cannot be converted to String
		String[] num=s.split(',');
		                     ^
./Main.java:10: error: cannot find symbol
		int len=num.size();
		           ^
  symbol:   method size()
  location: variable num of type String[]
./Main.java:44: error: bad operand types for binary operator '-'
		System.out.println(maxnum+","+tanxin.size()-1);
		                                           ^
  first type:  String
  second type: int
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
3 errors

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