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import java.io.*;
import antlr.CommonAST;
import antlr.collections.AST;
import antlr.DumpASTVisitor;
class Calc {
public static void main(String[] args) {
try {
CalcLexer lexer = new CalcLexer(new DataInputStream(System.in));
CalcParser parser = new CalcParser(lexer);
// Parse the input expression
parser.expr();
CommonAST t = (CommonAST)parser.getAST();
// Print the resulting tree out in LISP notation
System.out.println(t.toStringList());
CalcTreeWalker walker = new CalcTreeWalker();
// Traverse the tree created by the parser
walker.expr(t);
t = (CommonAST)walker.getAST();
System.out.println(t.toStringList());
} catch(Exception e) {
System.err.println("exception: "+e);
}
}
}
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