View Code of Problem 3497

import java.math.BigInteger;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int a,b,c;
        BigInteger a0,a1,a2;
        BigInteger temp = new BigInteger("0");
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            a = sc.nextInt();
            b = sc.nextInt();
            c = sc.nextInt();
            a0 = new BigInteger(String.valueOf(a));
            a1 = new BigInteger(String.valueOf(b));
            a2 = new BigInteger(String.valueOf(c));
            int x = 99;
            while(x!=2){
                temp = a0.add(a1).add(a2);
                a0 = a1;
                a1 = a2;
                a2 = temp;
                x--;
            }
            System.out.println(temp);
        }
    }
}