package string;

import java.util.Scanner;

public class ExtractNumber {

public static int solution1(String inputString){

StringBuilder result = new StringBuilder();

for (char c : inputString.toCharArray()){

if (Character.isDigit(c)){

result.append(c);

}

}

return Integer.parseInt(result.toString());

}

public static int solution2(String inputString){

int result = 0;

for (char c : inputString.toCharArray()){

if (c >= 48 && c <= 57){

result = result * 10 + (c - 48);

}

}

return result;

}

public void main() {

Scanner in=new Scanner(System.in);

String inputString = (in.nextLine());

System.out.println(solution1(inputString));

}

}