import java.util.Scanner;

public class PostfixCalculator {

    public static void calculator(String [] posfix){
        String current = "";
        char c;

        for (int i = 0; i < posfix.length; i++){
            current = posfix[i];
            c = current.charAt(0);

            if (c >= '0' && c <= '9'){

            }
        }
    }

    public static void main (String [] args) {
        infix_to_postfix infix = new infix_to_postfix();
        String string = "";
        Scanner scanner = new Scanner(System.in);

        while (true) {
            string = scanner.nextLine();

            String[] infixS = string.split(" ");

            calculator(infix.infix_to_postfix(infixS).split(" "));
        }
    }
}