java 11382

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.StringTokenizer;

class Main {
    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());

        BigInteger A = new BigInteger(st.nextToken());
        BigInteger B = new BigInteger(st.nextToken());
        BigInteger C = new BigInteger(st.nextToken());

        System.out.println(A.add(B).add(C));

        br.close();

    }
}