import java.util.Scanner;
class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(
System.in);
int digit1 = scanner.nextInt();
int digit2 = scanner.nextInt();
int digit3 = scanner.nextInt();
int sum = digit1 + digit2 + digit3;
System.out.println(sum); // put your code here
}
}