import java.util.Scanner;
public class Main{
public static void main(String[] args){
try(Scanner scanner=new scanner(System.in){
int a=scanner.nextInt();
System.out.printf(" ");
int b=scanner.nextInt();
System.out.printf(" ");
int c=scanner.nextInt();
System.out.printf(" ");
System.out.println((a+b)*c);
}
}
}```java
