알고리즘62 :: BOJ_15740_A+B - 9

 
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.StringTokenizer;
 
public class A+B-9{
 
    static int n,m;
    public static void main(String[] args) throws Exception{
        // TODO Auto-generated method stub
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        String a = st.nextToken();
        String b = st.nextToken();
        BigInteger first = new BigInteger(a);
        BigInteger second = new BigInteger(b);
        BigInteger result = first.add(second);
        System.out.println(result);
        
        
    }
 
}
 

BigInteger를 이렇게 쓰다니..